entry word vs main entry word

entry word and main entry word both are nouns.

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

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

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

Other synonyms of entry word include citation form.

entry word (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