sheathe vs sheathing

sheathe is not a noun while sheathing is a noun.

Word	Noun	Adjective	Verb	Adverb
sheathe	No	No	Yes	No
sheathing	Yes	No	No	No

sheathe (noun)	sheathing (noun)
	protective covering consisting, for example, of a layer of boards applied to the studs and joists of a building to strengthen it and serve as a foundation for a weatherproof exterior

sheathe (verb)	sheathing (verb)
enclose with a sheath
cover with a protective sheathing
plunge or bury (a knife or sword) in flesh