block out vs occlude

block out and occlude both are verbs.

Word	Noun	Adjective	Verb	Adverb
block out	No	No	Yes	No
occlude	No	No	Yes	No

As verbs, occlude is a hypernym of block out; that is, occlude is a word with a broader meaning than block out:

Other hypernyms of block out include block, close up, impede, jam, obstruct, obturate.

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