sitting vs picture taking

sitting and picture taking both are nouns.

Word	Noun	Adjective	Verb	Adverb
sitting	Yes	Yes	No	No
picture taking	Yes	No	No	No

sitting (noun)	picture taking (noun)
the act of assuming or maintaining a seated position	the act of taking and printing photographs
(photography) the act of assuming a certain position (as for a photograph or portrait)
a session as of a legislature or court
a meeting of spiritualists

sitting (adjective)	picture taking (adjective)
(of persons) having the torso erect and legs bent with the body supported on the buttocks
not moving and therefore easy to attack