Summary: The Latin root words *vis* and its variant *vid* both mean "see." These Latin roots are the word origin of a good number of English vocabulary words, including [*vis*]ual, in[*vis*]ible, pro[*vid*]e, and e[*vid*]ence. The Latin root *vis* is easily recalled through the word [*vis*]ion, someone's ability to "see," whereas *vid* can be remembered through [*vid*]eo, or moving images which you "see" on a screen.
