This is the 14049th most frequent Spanish word.
tailandés
"Tailandés" means "Thai" (related to Thailand or its people/language).
In this sentence, 'tailandés' is used as an adjective to describe the nationality of the subject.
Él es tailandés y vive en Bangkok.
He is Thai and lives in Bangkok.
Here, 'tailandés' is utilized as a noun to refer to the Thai language.
Ella habla tailandés fluidamente.
She speaks Thai fluently.
In this example, 'tailandesa' functions as an adjective to describe the cuisine's origin, modified for gender and number agreement.