retardation vs mental deficiency

retardation and mental deficiency both are nouns.

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

As nouns, mental deficiency is a hyponym of retardation; that is, mental deficiency is a word with a more specific, narrower meaning than retardation:

retardation: lack of normal development of intellectual capacities
mental deficiency: mild mental retardation

Other hyponyms of retardation include abnormality, mental defectiveness, moronity, amentia, idiocy, imbecility, savant syndrome.

retardation (noun)	mental deficiency (noun)
the act of slowing down or falling behind	mild mental retardation
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

retardation vs mental deficiency

retardation and mental deficiency both are nouns.

Words related to "retardation"

Words related to "mental deficiency"