petty morel vs suffrutex

petty morel and suffrutex both are nouns.

Word	Noun	Adjective	Verb	Adverb
petty morel	Yes	No	No	No
suffrutex	Yes	No	No	No

As nouns, suffrutex is a hypernym of petty morel; that is, suffrutex is a word with a broader meaning than petty morel:

petty morel: unarmed woody rhizomatous perennial plant distinguished from wild sarsaparilla by more aromatic roots and panicled umbels; southeastern North America to Mexico
suffrutex: low-growing woody shrub or perennial with woody base

Other hypernyms of petty morel include subshrub.

petty morel (noun)	suffrutex (noun)
unarmed woody rhizomatous perennial plant distinguished from wild sarsaparilla by more aromatic roots and panicled umbels; southeastern North America to Mexico	low-growing woody shrub or perennial with woody base