Term: ark shell: marine bivalve mollusk having a heavy toothed shell with a deep boat-like inner surface
Candidate hypernym: animal: a living organism characterized by voluntary movement → 1
Candidate hypernym: pewee: small olive-colored woodland flycatchers of eastern North America → 0
Candidate hypernym: poplar: soft light-colored non-durable wood of the poplar → 0
Candidate hypernym: superstrate: any stratum or layer superimposed on another → 0
Candidate hypernym: track: a bar or pair of parallel bars of rolled steel making the railway along which railroad cars or other vehicles can roll → 0
Candidate hypernym: lemmus: lemmings → 0
Candidate hypernym: electrical power: the product of voltage and current → 0
Candidate hypernym: quintessence: the purest and most concentrated essence of something → 0
Candidate hypernym: tailspin: rapid descent of an aircraft in a steep spiral → 0
Candidate hypernym: fellow traveler: a communist sympathizer (but not a member of the Communist Party) → 0
Candidate hypernym: pick: a heavy iron tool with a wooden handle and a curved head that is pointed on both ends → 0