gravid vs with child

gravid and with child both are adjectives.

Word	Noun	Adjective	Verb	Adverb
gravid	No	Yes	No	No
with child	No	Yes	No	No

As adjectives, gravid and with child are synonyms defined as:

Other synonyms of gravid include big, enceinte, expectant, great, heavy, large.

gravid (adjective)	with child (adjective)
in an advanced stage of pregnancy	in an advanced stage of pregnancy