block out vs picture taking

block out is not a noun while picture taking is a noun.

Word	Noun	Adjective	Verb	Adverb
block out	No	No	Yes	No
picture taking	Yes	No	No	No

block out (noun)	picture taking (noun)
	the act of taking and printing photographs

block out (verb)	picture taking (verb)
plan where and when songs should be inserted into a theatrical production, or plan a theatrical production in general
indicate roughly
shield from light
prevent from entering