Facial hair and Side-whiskers

Facial hair noun - Hair on the face (especially on the face of a man).

Side-whiskers and facial hair are semantically related. In some cases you can replace phrase "Side-whiskers" with "Facial hair", this phrases are similar.

Side-whiskers noun - Facial hair that has grown down the side of a man's face in front of the ears (especially when the rest of the beard is shaved off).

Facial hair and side-whiskers are semantically related. You can use "Facial hair" instead a noun phrase "Side-whiskers".