African lily vs African tulip

African lily and African tulip both are nouns.

Word	Noun	Adjective	Verb	Adverb
African lily	Yes	No	No	No
African tulip	Yes	No	No	No

As nouns, African lily and African tulip are synonyms defined as:

African lily and African tulip: African plant with bright green evergreen leaves and umbels of many usually deep violet-blue flowers

Other synonyms of African lily include Agapanthus africanus, blue African lily.

African lily (noun)	African tulip (noun)
African plant with bright green evergreen leaves and umbels of many usually deep violet-blue flowers	African plant with bright green evergreen leaves and umbels of many usually deep violet-blue flowers