An informal or colloquial way of saying "says".

कहता है

English Usage: "He sez that he will be here soon."

Hindi Usage: "वह कहता है कि वह जल्द ही यहाँ होगा।"

Present tense of "say" in a very informal context.

कहना

English Usage: "She sez it’s going to rain today."

Hindi Usage: "वह कहती है कि आज बारिश होगी।"