weeping vs biological science

weeping and biological science both are nouns.

Word	Noun	Adjective	Verb	Adverb
weeping	Yes	Yes	No	No
biological science	Yes	No	No	No

weeping (noun)	biological science (noun)
the process of shedding tears (usually accompanied by sobs or other inarticulate sounds)	the science that studies living organisms

weeping (adjective)	biological science (adjective)
showing sorrow
having branches or flower heads that bend downward