Three (the number)

तीन

English Usage: There are tres cats on the roof.

Hindi Usage: छत पर तीन बिल्लियाँ हैं।

Very (used in a colloquial sense, in some dialects)

बहुत

English Usage: She was tres happy with her results.

Hindi Usage: वह अपने नतीजों से बहुत खुश थी।