diff --git a/client/network/common/src/sync/message.rs b/client/network/common/src/sync/message.rs
index c651660c89c8d..7cdb14172885e 100644
--- a/client/network/common/src/sync/message.rs
+++ b/client/network/common/src/sync/message.rs
@@ -185,7 +185,7 @@ pub mod generic {
 		pub blocks: Vec<BlockData<Header, Hash, Extrinsic>>,
 	}
 
-	/// Announce a new complete relay chain block on the network.
+	/// Announce a new complete block on the network.
 	#[derive(Debug, PartialEq, Eq, Clone)]
 	pub struct BlockAnnounce<H> {
 		/// New block header.
diff --git a/client/network/common/src/sync/warp.rs b/client/network/common/src/sync/warp.rs
index 5f2cacd2eeae5..aef257af4d057 100644
--- a/client/network/common/src/sync/warp.rs
+++ b/client/network/common/src/sync/warp.rs
@@ -32,7 +32,7 @@ pub struct WarpProofRequest<B: BlockT> {
 
 /// The different types of warp syncing.
 pub enum WarpSyncParams<Block: BlockT> {
-	/// Standard warp sync for the relay chain
+	/// Standard warp sync for the chain.
 	WithProvider(Arc<dyn WarpSyncProvider<Block>>),
 	/// Skip downloading proofs and wait for a header of the state that should be downloaded.
 	///
@@ -48,7 +48,7 @@ pub enum VerificationResult<Block: BlockT> {
 	Complete(SetId, AuthorityList, Block::Header),
 }
 
-/// Warp sync backend. Handles retrieveing and verifying warp sync proofs.
+/// Warp sync backend. Handles retrieving and verifying warp sync proofs.
 pub trait WarpSyncProvider<Block: BlockT>: Send + Sync {
 	/// Generate proof starting at given block hash. The proof is accumulated until maximum proof
 	/// size is reached.
diff --git a/client/rpc-api/src/chain/mod.rs b/client/rpc-api/src/chain/mod.rs
index 2ed767c370a65..f215cd978f03a 100644
--- a/client/rpc-api/src/chain/mod.rs
+++ b/client/rpc-api/src/chain/mod.rs
@@ -29,7 +29,7 @@ pub trait ChainApi<Number, Hash, Header, SignedBlock> {
 	#[method(name = "chain_getHeader", blocking)]
 	fn header(&self, hash: Option<Hash>) -> RpcResult<Option<Header>>;
 
-	/// Get header and body of a relay chain block.
+	/// Get header and body of a block.
 	#[method(name = "chain_getBlock", blocking)]
 	fn block(&self, hash: Option<Hash>) -> RpcResult<Option<SignedBlock>>;
 
diff --git a/client/rpc/src/chain/mod.rs b/client/rpc/src/chain/mod.rs
index d54811320e749..2b5994f217df3 100644
--- a/client/rpc/src/chain/mod.rs
+++ b/client/rpc/src/chain/mod.rs
@@ -59,10 +59,10 @@ where
 		}
 	}
 
-	/// Get header of a relay chain block.
+	/// Get header of a block.
 	fn header(&self, hash: Option<Block::Hash>) -> Result<Option<Block::Header>, Error>;
 
-	/// Get header and body of a relay chain block.
+	/// Get header and body of a block.
 	fn block(&self, hash: Option<Block::Hash>) -> Result<Option<SignedBlock<Block>>, Error>;
 
 	/// Get hash of the n-th block in the canon chain.
diff --git a/frame/staking/src/pallet/impls.rs b/frame/staking/src/pallet/impls.rs
index 5143538c2a513..3058d3edc6fd6 100644
--- a/frame/staking/src/pallet/impls.rs
+++ b/frame/staking/src/pallet/impls.rs
@@ -1230,7 +1230,7 @@ impl<T: Config> historical::SessionManager<T::AccountId, Exposure<T::AccountId,
 }
 
 /// Add reward points to block authors:
-/// * 20 points to the block producer for producing a (non-uncle) block in the relay chain,
+/// * 20 points to the block producer for producing a (non-uncle) block,
 impl<T> pallet_authorship::EventHandler<T::AccountId, T::BlockNumber> for Pallet<T>
 where
 	T: Config + pallet_authorship::Config + pallet_session::Config,