shoot vs pick off

shoot is a noun but pick off is not a noun.

Word	Noun	Adjective	Verb	Adverb
shoot	Yes	No	Yes	No
pick off	No	No	Yes	No

As verbs, pick off is a hyponym of shoot; that is, pick off is a word with a more specific, narrower meaning than shoot:

Other hyponyms of shoot include flight.

shoot (noun)	pick off (noun)
the act of shooting at targets
a new branch

shoot (verb)	pick off (verb)
give an injection to	pull or pull out sharply
produce buds, branches, or germinate	shoot one by one
measure the altitude of by using a sextant
record on photographic film
make a film or photograph of something
utter fast and forcefully
fire a shot; release
hit with a missile from a weapon
score
spend frivolously and unwisely
force or drive (a fluid or gas) into by piercing
throw or propel in a specific direction or towards a specific objective
throw dice, as in a crap game
variegate by interweaving weft threads of different colors
run or move very quickly or hastily
move quickly and violently
send forth suddenly, intensely, swiftly
cause a sharp and sudden pain in
kill by firing a missile
emit (as light, flame, or fumes) suddenly and forcefully