Flemish language vs Flemish dialect

Flemish language and Flemish dialect both are nouns.

Word	Noun	Adjective	Verb	Adverb
Flemish language	Yes	No	No	No
Flemish dialect	Yes	No	No	No

As nouns, Flemish language and Flemish dialect are synonyms defined as:

Flemish language and Flemish dialect: one of two official languages of Belgium; closely related to Dutch

Other synonyms of Flemish language include Flemish.

Flemish language (noun)	Flemish dialect (noun)
one of two official languages of Belgium; closely related to Dutch	one of two official languages of Belgium; closely related to Dutch