lichtenoid eczema vs eczema

lichtenoid eczema and eczema both are nouns.

Word	Noun	Adjective	Verb	Adverb
lichtenoid eczema	Yes	No	No	No
eczema	Yes	No	No	No

As nouns, eczema is a hypernym of lichtenoid eczema; that is, eczema is a word with a broader meaning than lichtenoid eczema:

lichtenoid eczema: eczema characterized by thickening of the skin with accentuated skin lines
eczema: generic term for inflammatory conditions of the skin; particularly with vesiculation in the acute stages

lichtenoid eczema (noun)	eczema (noun)
eczema characterized by thickening of the skin with accentuated skin lines	generic term for inflammatory conditions of the skin; particularly with vesiculation in the acute stages