Term: catalyst: something that causes an important event to happen
Candidate hypernym: causal agent: any entity that produces an effect or is responsible for events or results → 1
Candidate hypernym: stay-at-home: a person who seldom goes anywhere; one not given to wandering or travel → 0
Candidate hypernym: uncle: a source of help and advice and encouragement → 0
Candidate hypernym: predictor: information that supports a probabilistic estimate of future events → 0
Candidate hypernym: barrow's goldeneye: North American goldeneye diving duck → 0
Candidate hypernym: castration: neutering a male animal by removing the testicles → 0
Candidate hypernym: krummhorn: a Renaissance woodwind with a double reed and a curving tube (crooked horn) → 0
Candidate hypernym: dumpy level: a surveyor's level having a short telescope fixed to a horizontally rotating table and a spirit level → 0
Candidate hypernym: requisition: the act of requiring; an authoritative request or demand, especially by a military or public authority that takes something over (usually temporarily) for military or public use → 0
Candidate hypernym: pencil sharpener: a rotary implement for sharpening the point on pencils → 0
Candidate hypernym: cat's-tail: tall marsh plant with cylindrical seed heads that explode when mature shedding large quantities of down; its long flat leaves are used for making mats and chair seats; of North America, Europe, Asia and North Africa → 0