Musteline and Polecat

Musteline noun - Fissiped fur-bearing carnivorous mammals.

Polecat and musteline are semantically related. In some cases you can replace term "Polecat" with "Musteline", this nouns are similar.

Polecat noun - American musteline mammal typically ejecting an intensely malodorous fluid when startled; in some classifications put in a separate subfamily Mephitinae.

Musteline and polecat are semantically related. Sometimes you can use "Musteline" instead a noun "Polecat".