Gnat and Punky

Gnat noun - Any of various small biting flies: midges; biting midges; black flies; sand flies.

Punky and gnat are semantically related. In some cases you can replace term "Punky" with "Gnat", this nouns are similar.

Punky noun - Minute two-winged insect that sucks the blood of mammals and birds and other insects.

Gnat and punky are semantically related. You can use "Gnat" instead a noun "Punky".