enclosing vs envelopment

enclosing and envelopment both are nouns.

Word	Noun	Adjective	Verb	Adverb
enclosing	Yes	No	No	No
envelopment	Yes	No	No	No

As nouns, enclosing and envelopment are synonyms defined as:

enclosing and envelopment: the act of enclosing something inside something else

Other synonyms of enclosing include enclosure, inclosure.

enclosing (noun)	envelopment (noun)
the act of enclosing something inside something else	the act of enclosing something inside something else