vitamin-deficiency diet vs high-vitamin diet

vitamin-deficiency diet and high-vitamin diet both are nouns.

Word	Noun	Adjective	Verb	Adverb
vitamin-deficiency diet	Yes	No	No	No
high-vitamin diet	Yes	No	No	No

As nouns, vitamin-deficiency diet and high-vitamin diet are synonyms defined as:

vitamin-deficiency diet and high-vitamin diet: a diet designed to patients with vitamin deficiencies

vitamin-deficiency diet (noun)	high-vitamin diet (noun)
a diet designed to patients with vitamin deficiencies	a diet designed to patients with vitamin deficiencies