siemens vs conductance unit

siemens and conductance unit both are nouns.

Word	Noun	Adjective	Verb	Adverb
siemens	Yes	No	No	No
conductance unit	Yes	No	No	No

As nouns, conductance unit is a hypernym of siemens; that is, conductance unit is a word with a broader meaning than siemens:

siemens: a unit of conductance equal to the reciprocal of an ohm
conductance unit: a measure of a material's ability to conduct an electrical charge

siemens (noun)	conductance unit (noun)
a unit of conductance equal to the reciprocal of an ohm	a measure of a material's ability to conduct an electrical charge