althea vs hollyhock

althea and hollyhock both are nouns.

Word	Noun	Adjective	Verb	Adverb
althea	Yes	No	No	No
hollyhock	Yes	No	No	No

As nouns, althea and hollyhock are synonyms defined as:

althea and hollyhock: any of various plants of the genus Althaea; similar to but having smaller flowers than genus Alcea

Other synonyms of althea include althaea.

althea (noun)	hollyhock (noun)
any of various plants of the genus Althaea; similar to but having smaller flowers than genus Alcea	any of various tall plants of the genus Alcea; native to the Middle East but widely naturalized and cultivated for its very large variously colored flowers
	any of various plants of the genus Althaea; similar to but having smaller flowers than genus Alcea