hammock vs molehill

hammock and molehill both are nouns.

Word	Noun	Adjective	Verb	Adverb
hammock	Yes	No	No	No
molehill	Yes	No	No	No

As nouns, molehill is a hyponym of hammock; that is, molehill is a word with a more specific, narrower meaning than hammock:

Other hyponyms of hammock include anthill, formicary, kopje, koppie.

hammock (noun)	molehill (noun)
a hanging bed of canvas or rope netting (usually suspended between two trees); swings easily	a mound of earth made by moles while burrowing
a small natural hill