spearhead vs lance

spearhead and lance both are nouns.

Word	Noun	Adjective	Verb	Adverb
spearhead	Yes	No	Yes	No
lance	Yes	No	Yes	No

spearhead (noun)	lance (noun)
the head and sharpened point of a spear	a long pointed rod used as a tool or weapon
the leading military unit in an attack	an implement with a shaft and barbed point used for catching fish
someone who leads or initiates an activity (attack or campaign etc.)	a surgical knife with a pointed double-edged blade; used for punctures and small incisions

spearhead (verb)	lance (verb)
be the leader of	open by piercing with a lancet
	pierce with a lance, as in a knights' fight
	move quickly, as if by cutting one's way