Air filter and Filter tip

Air filter noun - A filter that removes dust from the air that passes through it.

Filter tip and air filter are semantically related. In some cases you can replace phrase "Filter tip" with "Air filter", this phrases are similar.

Filter tip noun - An air filter on the end of a cigarette; contains material that filters the smoke.

Air filter and filter tip are semantically related. You can use "Air filter" instead a noun phrase "Filter tip".