citation form vs main entry word

citation form and main entry word both are nouns.

Word	Noun	Adjective	Verb	Adverb
citation form	Yes	No	No	No
main entry word	Yes	No	No	No

As nouns, citation form and main entry word are synonyms defined as:

citation form and main entry word: the form of a word that heads a lexical entry and is alphabetized in a dictionary

Other synonyms of citation form include entry word.

citation form (noun)	main entry word (noun)
the form of a word that heads a lexical entry and is alphabetized in a dictionary	the form of a word that heads a lexical entry and is alphabetized in a dictionary