would be nice if I know the difference between those two
From bass_guitar:
A bass guitar can be visually distinguished from a standard guitar by the fact that it almost always has four strings, and four tuning pegs at the top of the neck, usually along one side or with two on each side directly opposed.
From guitar:
A plucked stringed instrument, either electric or acoustic, with a long neck. Closely related to the bass guitar except that a standard guitar typically has six strings and six tuning pegs at the top of the neck. On rare occasions a guitar may have more strings than that (e.g. 12).