constraint vs cage

constraint and cage both are nouns.

Word	Noun	Adjective	Verb	Adverb
constraint	Yes	No	No	No
cage	Yes	No	Yes	No

As nouns, cage is a hyponym of constraint; that is, cage is a word with a more specific, narrower meaning than constraint:

constraint (noun)	cage (noun)
the act of constraining; the threat or use of force to control the thoughts or behavior of others	an enclosure made or wire or metal bars in which birds or animals can be kept
a device that retards something's motion	the net that is the goal in ice hockey
the state of being physically constrained	a movable screen placed behind home base to catch balls during batting practice
	something that restricts freedom as a cage restricts movement

constraint (verb)	cage (verb)
	confine in a cage