cyanamide vs calcium-cyanamide

cyanamide and calcium-cyanamide both are nouns.

Word	Noun	Adjective	Verb	Adverb
cyanamide	Yes	No	No	No
calcium-cyanamide	Yes	No	No	No

As nouns, cyanamide and calcium-cyanamide are synonyms defined as:

cyanamide and calcium-cyanamide: a compound used as a fertilizer and as a source of nitrogen compounds

cyanamide (noun)	calcium-cyanamide (noun)
a weak soluble dibasic acid (the parent acid of cyanamide salts)	a compound used as a fertilizer and as a source of nitrogen compounds
a compound used as a fertilizer and as a source of nitrogen compounds