diff --git a/cumulus/client/consensus/aura/src/lib.rs b/cumulus/client/consensus/aura/src/lib.rs
index e65aa6ce97..b25f019521 100644
--- a/cumulus/client/consensus/aura/src/lib.rs
+++ b/cumulus/client/consensus/aura/src/lib.rs
@@ -14,10 +14,10 @@
 // You should have received a copy of the GNU General Public License
 // along with Cumulus.  If not, see <http://www.gnu.org/licenses/>.
 
-//! The AuRa consensus algoritm for parachains.
+//! The AuRa consensus algorithm for parachains.
 //!
 //! This extends the Substrate provided AuRa consensus implementation to make it compatible for
-//! parachains. The main entry points for of this consensus algorithm are [`build_aura_consensus`]
+//! parachains. The main entry points for of this consensus algorithm are [`AuraConsensus::build`]
 //! and [`import_queue`].
 //!
 //! For more information about AuRa, the Substrate crate should be checked.
@@ -216,7 +216,7 @@ where
 	}
 }
 
-/// Paramaters of [`build_aura_consensus`].
+/// Parameters of [`AuraConsensus:build`].
 pub struct BuildAuraConsensusParams<PF, BI, CIDP, Client, BS, SO> {
 	pub proposer_factory: PF,
 	pub create_inherent_data_providers: CIDP,
diff --git a/cumulus/client/consensus/common/src/lib.rs b/cumulus/client/consensus/common/src/lib.rs
index 03e6269e88..c6d5844f01 100644
--- a/cumulus/client/consensus/common/src/lib.rs
+++ b/cumulus/client/consensus/common/src/lib.rs
@@ -104,7 +104,7 @@ where
 		mut block_import_params: sc_consensus::BlockImportParams<Block, Self::Transaction>,
 		cache: std::collections::HashMap<sp_consensus::CacheKeyId, Vec<u8>>,
 	) -> Result<sc_consensus::ImportResult, Self::Error> {
-		// Best block is determined by the relay chain, or if we are doing the intial sync
+		// Best block is determined by the relay chain, or if we are doing the initial sync
 		// we import all blocks as new best.
 		block_import_params.fork_choice = Some(sc_consensus::ForkChoiceStrategy::Custom(
 			block_import_params.origin == sp_consensus::BlockOrigin::NetworkInitialSync,
diff --git a/cumulus/client/consensus/common/src/parachain_consensus.rs b/cumulus/client/consensus/common/src/parachain_consensus.rs
index 6328681fd9..ca330d92ac 100644
--- a/cumulus/client/consensus/common/src/parachain_consensus.rs
+++ b/cumulus/client/consensus/common/src/parachain_consensus.rs
@@ -123,7 +123,7 @@ where
 
 /// Run the parachain consensus.
 ///
-/// This will follow the given `relay_chain` to act as consesus for the parachain that corresponds
+/// This will follow the given `relay_chain` to act as consensus for the parachain that corresponds
 /// to the given `para_id`. It will set the new best block of the parachain as it gets aware of it.
 /// The same happens for the finalized block.
 ///
diff --git a/cumulus/client/consensus/relay-chain/src/lib.rs b/cumulus/client/consensus/relay-chain/src/lib.rs
index 69a92175da..021fdd1f91 100644
--- a/cumulus/client/consensus/relay-chain/src/lib.rs
+++ b/cumulus/client/consensus/relay-chain/src/lib.rs
@@ -14,7 +14,7 @@
 // You should have received a copy of the GNU General Public License
 // along with Cumulus.  If not, see <http://www.gnu.org/licenses/>.
 
-//! The relay-chain provided consensus algoritm for parachains.
+//! The relay-chain provided consensus algorithm for parachains.
 //!
 //! This is the simplest consensus algorithm you can use when developing a parachain. It is a
 //! permission-less consensus algorithm that doesn't require any staking or similar to join as a
@@ -28,7 +28,7 @@
 //! 3. The parachain validators validate at most X different parachain candidates, where X is the
 //! total number of parachain validators.
 //!
-//! 4. The parachain candidate that is backed by the most validators is choosen by the relay-chain
+//! 4. The parachain candidate that is backed by the most validators is chosen by the relay-chain
 //! block producer to be added as backed candidate on chain.
 //!
 //! 5. After the parachain candidate got backed and included, all collators start at 1.
@@ -217,7 +217,7 @@ where
 	}
 }
 
-/// Paramaters of [`build_relay_chain_consensus`].
+/// Parameters of [`build_relay_chain_consensus`].
 pub struct BuildRelayChainConsensusParams<PF, BI, CIDP, RCInterface> {
 	pub para_id: ParaId,
 	pub proposer_factory: PF,
diff --git a/cumulus/client/relay-chain-interface/src/lib.rs b/cumulus/client/relay-chain-interface/src/lib.rs
index 13b0551b38..3c45b5a6e4 100644
--- a/cumulus/client/relay-chain-interface/src/lib.rs
+++ b/cumulus/client/relay-chain-interface/src/lib.rs
@@ -36,7 +36,7 @@ pub type RelayChainResult<T> = Result<T, RelayChainError>;
 
 #[derive(thiserror::Error, Debug)]
 pub enum RelayChainError {
-	#[error("Error occured while calling relay chain runtime: {0:?}")]
+	#[error("Error occurred while calling relay chain runtime: {0:?}")]
 	ApiError(#[from] ApiError),
 	#[error("Timeout while waiting for relay-chain block `{0}` to be imported.")]
 	WaitTimeout(PHash),
@@ -46,9 +46,9 @@ pub enum RelayChainError {
 	WaitBlockchainError(PHash, sp_blockchain::Error),
 	#[error("Blockchain returned an error: {0:?}")]
 	BlockchainError(#[from] sp_blockchain::Error),
-	#[error("State machine error occured: {0:?}")]
+	#[error("State machine error occurred: {0:?}")]
 	StateMachineError(Box<dyn sp_state_machine::Error>),
-	#[error("Unspecified error occured: {0:?}")]
+	#[error("Unspecified error occurred: {0:?}")]
 	GenericError(String),
 }
 
diff --git a/cumulus/polkadot-parachains/parachains-common/src/impls.rs b/cumulus/polkadot-parachains/parachains-common/src/impls.rs
index b5919f736c..47a0ce9243 100644
--- a/cumulus/polkadot-parachains/parachains-common/src/impls.rs
+++ b/cumulus/polkadot-parachains/parachains-common/src/impls.rs
@@ -13,7 +13,7 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-//! Auxillary struct/enums for parachain runtimes.
+//! Auxiliary struct/enums for parachain runtimes.
 //! Taken from polkadot/runtime/common (at a21cd64) and adapted for parachains.
 
 use frame_support::traits::{