Forbidden City vs Lassa

Forbidden City and Lassa both are nouns.

Word	Noun	Adjective	Verb	Adverb
Forbidden City	Yes	No	No	No
Lassa	Yes	No	No	No

As nouns, Forbidden City and Lassa are synonyms defined as:

Forbidden City and Lassa: the sacred city of Lamaism; known as the Forbidden City for its former inaccessibility and hostility to strangers

Other synonyms of Forbidden City include capital of Tibet, Lhasa.

Forbidden City (noun)	Lassa (noun)
a walled section of Beijing that encloses the palace that was formerly the residence of the emperor of China	the sacred city of Lamaism; known as the Forbidden City for its former inaccessibility and hostility to strangers
the sacred city of Lamaism; known as the Forbidden City for its former inaccessibility and hostility to strangers