nun's habit vs habit

nun's habit and habit both are nouns.

Word	Noun	Adjective	Verb	Adverb
nun's habit	Yes	No	No	No
habit	Yes	No	Yes	No

As nouns, habit is a hypernym of nun's habit; that is, habit is a word with a broader meaning than nun's habit:

nun's habit (noun)	habit (noun)
a long loose habit worn by nuns in a convent	excessive use of drugs
	(psychology) an automatic pattern of behavior in reaction to a specific situation; may be inherited or acquired through frequent repetition
	a distinctive attire worn by a member of a religious order
	attire that is typically worn by a horseback rider (especially a woman's attire)
	an established custom
	the general form or mode of growth (especially of a plant or crystal)

nun's habit (verb)	habit (verb)
	put a habit on