To shine with a small bright light or reflection.

चमकना

English Usage: The diamonds were glinting under the light.

Hindi Usage: हीरे को रोशनी में चमकते हुए देखा।

A small flash of light.

चमक

English Usage: There was a glint in her eye that suggested mischief.

Hindi Usage: उसकी आंख में एक चमक थी जो शरारत का इशारा करती थी।