thrust ahead vs thrust

thrust ahead is not a noun while thrust is a noun.

Word	Noun	Adjective	Verb	Adverb
thrust ahead	No	No	Yes	No
thrust	Yes	No	Yes	No

thrust ahead (noun)	thrust (noun)
	the act of applying force to propel something
	a strong blow with a knife or other sharp pointed instrument
	a sharp hand gesture (resembling a blow)
	verbal criticism
	the force used in pushing

thrust ahead (verb)	thrust (verb)
push one's way	impose urgently, importunately, or inexorably
	penetrate or cut through with a sharp instrument
	place or put with great energy
	push forcefully
	make a thrusting forward movement
	press or force
	push violently in a specified direction
	force (molten rock) into pre-existing rock