snap vs snap up

snap is a noun but snap up is not a noun.

Word	Noun	Adjective	Verb	Adverb
snap	Yes	No	Yes	No
snap up	No	No	Yes	No

snap (noun)	snap up (noun)
the act of catching an object with the hands
(American football) putting the ball in play by passing it (between the legs) to a back
any undertaking that is easy to do
the act of snapping the fingers; movement of a finger from the tip to the base of the thumb on the same hand
a fastener used on clothing; fastens with a snapping sound
an informal photograph; usually made with a small hand-held camera
the tendency of a body to return to its original shape after it has been stretched or compressed
a sudden sharp noise
a sudden breaking
the noise produced by the rapid movement of a finger from the tip to the base of the thumb on the same hand
a crisp round cookie flavored with ginger
tender green beans without strings that easily snap into sections
a spell of cold weather

snap (verb)	snap up (verb)
break suddenly and abruptly, as under tension	get hold of or seize quickly and easily
close with a snapping motion
utter in an angry, sharp, or abrupt tone
record on photographic film
to grasp hastily or eagerly
separate or cause to separate abruptly
cause to make a snapping sound
put in play with a snap
bring the jaws together
lose control of one's emotions
move or strike with a noise
move with a snapping sound
make a sharp sound