constrain vs compel

constrain and compel both are verbs.

Word	Noun	Adjective	Verb	Adverb
constrain	No	No	Yes	No
compel	No	No	Yes	No

As verbs, compel is a hypernym of constrain; that is, compel is a word with a broader meaning than constrain:

Other hypernyms of constrain include obligate, oblige.

constrain (verb)	compel (verb)
severely restrict in scope or extent	force somebody to do something
to close within bounds, or otherwise limit or deprive of free movement	necessitate or exact
compel to behave in a certain way