Term: obsidian: acid or granitic glass formed by the rapid cooling of lava without crystallization; usually dark, but transparent in thin pieces
Candidate hypernym: volcanic glass: a kind of natural glass produced when molten lava cools very rapidly → 1
Candidate hypernym: angel shark: sharks with broad flat bodies and winglike pectoral fins but that swim the way sharks do → 0
Candidate hypernym: historic period: an era of history having some distinctive feature → 0
Candidate hypernym: meagerness: the quality of being meager; -George Eliot → 0
Candidate hypernym: terbium: a metallic element of the rare earth group; used in lasers; occurs in apatite and monazite and xenotime and ytterbite → 0
Candidate hypernym: rosette: a cluster of leaves growing in crowded circles from a common center or crown (usually at or close to the ground) → 0
Candidate hypernym: planter: the owner or manager of a plantation → 0
Candidate hypernym: throatwort: European bellflower with blue-purple to lilac flowers formerly used to treat sore throat → 0
Candidate hypernym: perdix: a genus of Perdicinae → 0
Candidate hypernym: grave: death of a person → 0
Candidate hypernym: underpart: a part lying on the lower side or underneath an animal's body → 0