Term: null set: a set that is empty; a set with no members
Candidate hypernym: set: (mathematics) an abstract collection of numbers or symbols → 1
Candidate hypernym: stepmother: the wife of your father by a subsequent marriage → 0
Candidate hypernym: price index: an index that traces the relative changes in the price of an individual good (or a market basket of goods) over time → 0
Candidate hypernym: radio broadcast: a broadcast via radio → 0
Candidate hypernym: carissa: a shrub of the genus Carissa having fragrant white flowers and plumlike red to purple-black fruits → 0
Candidate hypernym: nitrochloromethane: gaseous form of chloropicrin used as tear gas → 0
Candidate hypernym: national income: the total value of all income in a nation (wages and profits and interest and rents and pension payments) during a given period (usually 1 yr) → 0
Candidate hypernym: federal: a member of the Union Army during the American Civil War → 0
Candidate hypernym: gerund: a noun formed from a verb (such as the `-ing' form of an English verb when used as a noun) → 0
Candidate hypernym: breathalyzer: a device that measures chemicals (especially the alcohol content) in a person's expired breath → 0
Candidate hypernym: common facial vein: vein formed by union of facial vein and the retromandibular vein and emptying into the jugular vein → 0