Krung Thep vs Bangkok

Krung Thep and Bangkok both are nouns.

Word	Noun	Adjective	Verb	Adverb
Krung Thep	Yes	No	No	No
Bangkok	Yes	No	No	No

As nouns, Krung Thep and Bangkok are synonyms defined as:

Krung Thep and Bangkok: the capital and largest city and chief port of Thailand; a leading city in southeastern Asia; noted for Buddhist architecture

Other synonyms of Krung Thep include capital of Thailand.

Krung Thep (noun)	Bangkok (noun)
the capital and largest city and chief port of Thailand; a leading city in southeastern Asia; noted for Buddhist architecture	the capital and largest city and chief port of Thailand; a leading city in southeastern Asia; noted for Buddhist architecture