mental defectiveness vs retardation

mental defectiveness and retardation both are nouns.

Word	Noun	Adjective	Verb	Adverb
mental defectiveness	Yes	No	No	No
retardation	Yes	No	No	No

As nouns, retardation is a hypernym of mental defectiveness; that is, retardation is a word with a broader meaning than mental defectiveness:

mental defectiveness: retardation sufficient to fall outside the normal range of intelligence
retardation: lack of normal development of intellectual capacities

Other hypernyms of mental defectiveness include backwardness, mental retardation, slowness, subnormality.

mental defectiveness (noun)	retardation (noun)
retardation sufficient to fall outside the normal range of intelligence	the act of slowing down or falling behind
	a decrease in rate of change
	lack of normal development of intellectual capacities
	any agent that retards or delays or hinders
	the extent to which something is delayed or held back

mental defectiveness vs retardation

mental defectiveness and retardation both are nouns.

Words related to "mental defectiveness"

Words related to "retardation"