lotus land vs realm

lotus land and realm both are nouns.

Word	Noun	Adjective	Verb	Adverb
lotus land	Yes	No	No	No
realm	Yes	No	No	No

As nouns, realm is a hypernym of lotus land; that is, realm is a word with a broader meaning than lotus land:

Other hypernyms of lotus land include kingdom, land.

lotus land (noun)	realm (noun)
an idyllic realm of contentment and self-indulgence	a knowledge domain that you are interested in or are communicating about
	the domain ruled by a king or queen
	a domain in which something is dominant