lawyer cane vs calamus

lawyer cane and calamus both are nouns.

Word	Noun	Adjective	Verb	Adverb
lawyer cane	Yes	No	No	No
calamus	Yes	No	No	No

As nouns, calamus is a hypernym of lawyer cane; that is, calamus is a word with a broader meaning than lawyer cane:

lawyer cane: tall scrambling spiny palm of northeastern Queensland, Australia
calamus: any tropical Asian palm of the genus Calamus; light tough stems are a source of rattan canes

lawyer cane (noun)	calamus (noun)
tall scrambling spiny palm of northeastern Queensland, Australia	the hollow spine of a feather
	any tropical Asian palm of the genus Calamus; light tough stems are a source of rattan canes
	perennial marsh plant having swordlike leaves and aromatic roots
	the aromatic root of the sweet flag used medicinally