calamus vs lawyer cane

calamus and lawyer cane both are nouns.

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

As nouns, lawyer cane is a hyponym of calamus; that is, lawyer cane is a word with a more specific, narrower meaning than calamus:

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

Other hyponyms of calamus include Calamus rotang, rattan, rattan palm, Calamus australis.

calamus (noun)	lawyer cane (noun)
the hollow spine of a feather	tall scrambling spiny palm of northeastern Queensland, Australia
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