sheathing vs sheathe

sheathing is a noun but sheathe is not a noun.

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

sheathing (noun)	sheathe (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

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