restrain vs pinion

restrain is not a noun while pinion is a noun.

Word	Noun	Adjective	Verb	Adverb
restrain	No	No	Yes	No
pinion	Yes	No	Yes	No

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

restrain: to close within bounds, or otherwise limit or deprive of free movement
pinion: bind the arms of

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

restrain (noun)	pinion (noun)
	wing of a bird
	any of the larger wing or tail feathers of a bird
	a gear with a small number of teeth designed to mesh with a larger wheel or rack

restrain (verb)	pinion (verb)
prevent the action or expression of	cut the wings off (of birds)
to close within bounds, or otherwise limit or deprive of free movement	bind the arms of
restrict (someone or something) so as to make free movement difficult
prevent (someone or something) from doing something