pass through vs pass across

pass through and pass across both are verbs.

Word	Noun	Adjective	Verb	Adverb
pass through	No	No	Yes	No
pass across	No	No	Yes	No

As verbs, pass through and pass across are synonyms defined as:

pass through and pass across: make a passage or journey from one place to another

Other synonyms of pass through include move through, pass over, transit.

pass through (verb)	pass across (verb)
make a passage or journey from one place to another	make a passage or journey from one place to another
pass through an enemy line; in a military conflict
cause to move through