- celeriac, celery root, knob celery, root celery, turnip-rooted celery, Apium graveolens rapaceum - grown for its thickened edible aromatic root
--1 is a kind of herb, herbaceous plant
--1 has parts: celeriac, celery root - celeriac, celery root - thickened edible aromatic root of a variety of celery plant
--2 is a kind of root vegetable
--2 is a part ofceleriac, celery root, knob celery, root celery, turnip-rooted celery, Apium graveolens rapaceum