This is the 6113th most frequent Portuguese word.
celta
"Celta" means "Celt," referring to a member of the ancient Celtic people or culture.
In this sentence, 'celtas' refers to the Celtic people, usage as a proper noun in historical context.
Os antigos celtas eram conhecidos por suas habilidades artísticas.
The ancient Celts were known for their artistic skills.
Here, 'Celta' refers to a car model, usage as a brand or product name.
Eu comprei um carro modelo Celta muito econômico.
I bought a very economical car, model Celta.
In this example, 'celta' is used as an adjective describing the culture related to the Celts.