enclosure vs boxing

enclosure and boxing both are nouns.

Word	Noun	Adjective	Verb	Adverb
enclosure	Yes	No	No	No
boxing	Yes	No	No	No

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

Other hyponyms of enclosure include packing, encasement, incasement.

enclosure (noun)	boxing (noun)
the act of enclosing something inside something else	fighting with the fists
a structure consisting of an area that has been enclosed for some purpose	the enclosure of something in a package or box
something (usually a supporting document) that is enclosed in an envelope with a covering letter
a naturally enclosed space