Lego set vs Lego

Lego set and Lego both are nouns.

Word	Noun	Adjective	Verb	Adverb
Lego set	Yes	No	No	No
Lego	Yes	No	No	No

As nouns, Lego set and Lego are synonyms defined as:

Lego set and Lego: (trademark) a child's plastic construction set for making mechanical models

Lego set (noun)	Lego (noun)
(trademark) a child's plastic construction set for making mechanical models	(trademark) a child's plastic construction set for making mechanical models