tunnel vs shaft

tunnel and shaft both are nouns.

Word	Noun	Adjective	Verb	Adverb
tunnel	Yes	No	Yes	No
shaft	Yes	No	Yes	No

tunnel (noun)	shaft (noun)
a passageway through or under something, usually underground (especially one for trains or cars)	the hollow spine of a feather
a hole made by an animal, usually for shelter	a long rod or pole (especially the handle of an implement or the body of a weapon like a spear or arrow)
	a revolving rod that transmits power or motion
	a long vertical passage sunk into the earth, as for a mine or tunnel
	(architecture) upright consisting of the vertical part of a column
	a vertical passageway through a building (as for an elevator)
	a long pointed rod used as a tool or weapon
	the main (mid) section of a long bone
	obscene terms for penis
	a line that forms the length of an arrow pointer
	an aggressive remark directed at a person like a missile and intended to have a telling effect
	a column of light (as from a beacon)

tunnel (verb)	shaft (verb)
force a way through	defeat someone through trickery or deceit
move through by or as by digging	equip with a shaft