trencher vs trench

trencher and trench both are nouns.

Word	Noun	Adjective	Verb	Adverb
trencher	Yes	No	No	No
trench	Yes	No	Yes	No

trencher (noun)	trench (noun)
a wooden board or platter on which food is served or carved	a ditch dug as a fortification having a parapet of the excavated earth
someone who digs trenches	any long ditch cut in the ground
	a long steep-sided depression in the ocean floor

trencher (verb)	trench (verb)
	cut or carve deeply into
	dig a trench or trenches
	cut a trench in, as for drainage
	fortify by surrounding with trenches
	set, plant, or bury in a trench
	impinge or infringe upon