ocarina vs sweet potato

ocarina and sweet potato both are nouns.

Word	Noun	Adjective	Verb	Adverb
ocarina	Yes	No	No	No
sweet potato	Yes	No	No	No

As nouns, ocarina and sweet potato are synonyms defined as:

ocarina and sweet potato: egg-shaped terracotta wind instrument with a mouthpiece and finger holes

ocarina (noun)	sweet potato (noun)
egg-shaped terracotta wind instrument with a mouthpiece and finger holes	egg-shaped terracotta wind instrument with a mouthpiece and finger holes
	the edible tuberous root of the sweet potato vine which is grown widely in warm regions of the United States
	pantropical vine widely cultivated in several varieties for its large sweet tuberous root with orange flesh