diff --git a/client/rpc-core/CHANGELOG.md b/client/rpc-core/CHANGELOG.md
index d6dc0db8e0..d600802f8f 100644
--- a/client/rpc-core/CHANGELOG.md
+++ b/client/rpc-core/CHANGELOG.md
@@ -1,5 +1,5 @@
 # Changelog for `fc-rpc-core`
 
 ## Unreleased
-- Add `FilteredParams::address_in_bloom()` and `FilteredParams::topics_in_bloom()` functions to check the possible existance of Filter addresses or topics in a block.
+- Add `FilteredParams::address_in_bloom()` and `FilteredParams::topics_in_bloom()` functions to check the possible existence of Filter addresses or topics in a block.
 - Removed `PendingTransaction` and `PendingTransactions` types.
diff --git a/client/rpc-core/src/types/transaction.rs b/client/rpc-core/src/types/transaction.rs
index 6306df69e0..0ba042d4f5 100644
--- a/client/rpc-core/src/types/transaction.rs
+++ b/client/rpc-core/src/types/transaction.rs
@@ -40,7 +40,7 @@ pub struct Transaction {
 	pub from: H160,
 	/// Recipient
 	pub to: Option<H160>,
-	/// Transfered value
+	/// Transferred value
 	pub value: U256,
 	/// Gas Price
 	#[serde(skip_serializing_if = "Option::is_none")]
diff --git a/client/rpc-core/src/types/txpool.rs b/client/rpc-core/src/types/txpool.rs
index 5fd9bcb31a..7968994407 100644
--- a/client/rpc-core/src/types/txpool.rs
+++ b/client/rpc-core/src/types/txpool.rs
@@ -96,7 +96,7 @@ pub struct TxPoolTransaction {
 	/// Recipient
 	#[serde(serialize_with = "to_serialize")]
 	pub to: Option<H160>,
-	/// Transfered value
+	/// Transferred value
 	pub value: U256,
 	/// Gas Price
 	pub gas_price: U256,
diff --git a/client/rpc/src/eth/execute.rs b/client/rpc/src/eth/execute.rs
index 1c1e37c737..df92f52ed2 100644
--- a/client/rpc/src/eth/execute.rs
+++ b/client/rpc/src/eth/execute.rs
@@ -53,7 +53,7 @@ pub const JSON_RPC_ERROR_DEFAULT: i32 = -32000;
 /// Can be used to estimate gas of some contracts using a different function
 /// in the case the normal gas estimation doesn't work.
 ///
-/// Exemple: a precompile that tries to do a subcall but succeeds regardless of the
+/// Example: a precompile that tries to do a subcall but succeeds regardless of the
 /// success of the subcall. The gas estimation will thus optimize the gas limit down
 /// to the minimum, while we want to estimate a gas limit that will allow the subcall to
 /// have enough gas to succeed.
diff --git a/ts-tests/tests/test-log-filtering.ts b/ts-tests/tests/test-log-filtering.ts
index b1bf7d95e9..a8f85edd3d 100644
--- a/ts-tests/tests/test-log-filtering.ts
+++ b/ts-tests/tests/test-log-filtering.ts
@@ -27,26 +27,26 @@ describeWithFrontier("Frontier RPC (Log filtering)", (context) => {
 
 	function getNonMatchingCases(receipt: TransactionReceipt) {
 		return [
-			// Non-existant address.
+			// Non-existent address.
 			{
 				fromBlock: "0x0",
 				toBlock: "latest",
 				address: "0x0000000000000000000000000000000000000000",
 			},
-			// Non-existant topic.
+			// Non-existent topic.
 			{
 				fromBlock: "0x0",
 				toBlock: "latest",
 				topics: ["0x0000000000000000000000000000000000000000000000000000000000000000"],
 			},
-			// Existant address + non-existant topic.
+			// Existent address + non-existent topic.
 			{
 				fromBlock: "0x0",
 				toBlock: "latest",
 				address: receipt.contractAddress,
 				topics: ["0x0000000000000000000000000000000000000000000000000000000000000000"],
 			},
-			// Non-existant address + existant topic.
+			// Non-existent address + existent topic.
 			{
 				fromBlock: "0x0",
 				toBlock: "latest",