habit vs habitual

habit is a noun but habitual is not a noun.

Word	Noun	Adjective	Verb	Adverb
habit	Yes	No	Yes	No
habitual	No	Yes	No	No

habit (noun)	habitual (noun)
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)

habit (adjective)	habitual (adjective)
	commonly used or practiced; usual

habit (verb)	habitual (verb)
put a habit on