celery root vs celeriac

celery root and celeriac both are nouns.

Word	Noun	Adjective	Verb	Adverb
celery root	Yes	No	No	No
celeriac	Yes	No	No	No

As nouns, celery root and celeriac are synonyms defined as:

celery root and celeriac: thickened edible aromatic root of a variety of celery plant

As nouns, celery root and celeriac are synonyms defined as:

Other synonyms of celery root include Apium graveolens rapaceum, knob celery, root celery, turnip-rooted celery.

celery root (noun)	celeriac (noun)
thickened edible aromatic root of a variety of celery plant	thickened edible aromatic root of a variety of celery plant
grown for its thickened edible aromatic root	grown for its thickened edible aromatic root