century plant vs American aloe

century plant and American aloe both are nouns.

Word	Noun	Adjective	Verb	Adverb
century plant	Yes	No	No	No
American aloe	Yes	No	No	No

As nouns, century plant and American aloe are synonyms defined as:

century plant and American aloe: tropical American plants with basal rosettes of fibrous sword-shaped leaves and flowers in tall spikes; some cultivated for ornament or for fiber

Other synonyms of century plant include agave.

century plant (noun)	American aloe (noun)
tropical American plants with basal rosettes of fibrous sword-shaped leaves and flowers in tall spikes; some cultivated for ornament or for fiber	tropical American plants with basal rosettes of fibrous sword-shaped leaves and flowers in tall spikes; some cultivated for ornament or for fiber