wormcast vs fossil

wormcast and fossil both are nouns.

Word	Noun	Adjective	Verb	Adverb
wormcast	Yes	No	No	No
fossil	Yes	Yes	No	No

As nouns, fossil is a hypernym of wormcast; that is, fossil is a word with a broader meaning than wormcast:

wormcast: fossil trail of a worm
fossil: the remains (or an impression) of a plant or animal that existed in a past geological age and that has been excavated from the soil

wormcast (noun)	fossil (noun)
fossil trail of a worm	the remains (or an impression) of a plant or animal that existed in a past geological age and that has been excavated from the soil
cylindrical mass of earth voided by a burrowing earthworm or lugworm	someone whose style is out of fashion

wormcast (adjective)	fossil (adjective)
	characteristic of a fossil