constrain vs enchain

constrain and enchain both are verbs.

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

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

constrain: to close within bounds, or otherwise limit or deprive of free movement
enchain: restrain or bind with chains

Other hyponyms of constrain include bind, tie down, tie up, truss, fetter, shackle, pinion, shackle, impound, pound, pound, pound up, fold, pen up, ground.

constrain (verb)	enchain (verb)
severely restrict in scope or extent	restrain or bind with chains
to close within bounds, or otherwise limit or deprive of free movement
compel to behave in a certain way