refer vs involve

refer and involve both are verbs.

Word	Noun	Adjective	Verb	Adverb
refer	No	No	Yes	No
involve	No	No	Yes	No

As verbs, involve is a hyponym of refer; that is, involve is a word with a more specific, narrower meaning than refer:

refer (verb)	involve (verb)
think of, regard, or classify under a subsuming principle or with a general group or in relation to another	make complex or intricate or complicated
have as a meaning	occupy or engage the interest of
make reference to	have as a necessary feature
use a name to designate	connect closely and often incriminatingly
seek information from	contain as a part
send or direct for treatment, information, or a decision	engage as a participant
be relevant to	require as useful, just, or proper