yeoman vs yeoman of the guard

yeoman and yeoman of the guard both are nouns.

Word	Noun	Adjective	Verb	Adverb
yeoman	Yes	No	No	No
yeoman of the guard	Yes	No	No	No

As nouns, yeoman and yeoman of the guard are synonyms defined as:

yeoman and yeoman of the guard: officer in the (ceremonial) bodyguard of the British monarch

Other synonyms of yeoman include beefeater.

yeoman (noun)	yeoman of the guard (noun)
in former times was free and cultivated his own land	officer in the (ceremonial) bodyguard of the British monarch
officer in the (ceremonial) bodyguard of the British monarch