judicial proceeding vs litigation

judicial proceeding and litigation both are nouns.

Word	Noun	Adjective	Verb	Adverb
judicial proceeding	Yes	No	No	No
litigation	Yes	No	No	No

As nouns, judicial proceeding and litigation are synonyms defined as:

judicial proceeding and litigation: a legal proceeding in a court; a judicial contest to determine and enforce legal rights

judicial proceeding (noun)	litigation (noun)
a legal proceeding in a court; a judicial contest to determine and enforce legal rights	a legal proceeding in a court; a judicial contest to determine and enforce legal rights