sheep plant vs herbaceous plant

sheep plant and herbaceous plant both are nouns.

Word	Noun	Adjective	Verb	Adverb
sheep plant	Yes	No	No	No
herbaceous plant	Yes	No	No	No

As nouns, herbaceous plant is a hypernym of sheep plant; that is, herbaceous plant is a word with a broader meaning than sheep plant:

sheep plant: perennial prostrate mat-forming herb with hoary woolly foliage
herbaceous plant: a plant lacking a permanent woody stem; many are flowering garden plants or potherbs; some having medicinal properties; some are pests

Other hypernyms of sheep plant include herb.

As nouns, herbaceous plant is a hypernym of sheep plant; that is, herbaceous plant is a word with a broader meaning than sheep plant:

sheep plant: cushion-forming New Zealand herb having leaves densely covered with tawny hairs
herbaceous plant: a plant lacking a permanent woody stem; many are flowering garden plants or potherbs; some having medicinal properties; some are pests

Other hypernyms of sheep plant include herb.

sheep plant (noun)	herbaceous plant (noun)
perennial prostrate mat-forming herb with hoary woolly foliage	a plant lacking a permanent woody stem; many are flowering garden plants or potherbs; some having medicinal properties; some are pests
cushion-forming New Zealand herb having leaves densely covered with tawny hairs