slip away vs slip

slip away is not a noun while slip is a noun.

Word	Noun	Adjective	Verb	Adverb
slip away	No	No	Yes	No
slip	Yes	No	Yes	No

slip away (noun)	slip (noun)
	a flight maneuver; aircraft slides sideways in the air
	a socially awkward or tactless act
	the act of avoiding capture (especially by cunning)
	an unexpected slide
	a minor inadvertent mistake usually observed in speech or writing or in small accidents or memory lapses etc.
	a woman's sleeveless undergarment
	bed linen consisting of a cover for a pillow
	artifact consisting of a narrow flat piece of material
	a small sheet of paper
	a slippery smoothness
	an accidental misstep threatening (or causing) a fall
	a place where a craft can be made fast
	a young and slender person
	a part (sometimes a root or leaf or bud) removed from a plant to propagate a new plant through rooting or grafting
	potter's clay that is thinned and used for coating or decorating ceramics

slip away (verb)	slip (verb)
for time to move forward	fall to a lower standard
leave furtively and stealthily	move out of position
	insert inconspicuously or quickly or quietly
	to make a mistake or be incorrect
	pass out of one's memory
	move obliquely or sideways, usually in an uncontrolled manner
	move stealthily
	move easily
	move smoothly and easily
	cause to move with a smooth or sliding motion
	pass on stealthily