keyway

As nouns the difference between keyway and shaft

is that keyway is a slot into which a precision attachment (a key) is fitted while shaft is (lb) the entire body of a long weapon, such as an arrow.

As a verb shaft is

(slang) to fuck over; to cause harm to, especially through deceit or treachery.

As nouns the difference between keyway and groove

is that keyway is a slot into which a precision attachment (a key) is fitted while groove is a long, narrow channel or depression; e.g., such a slot cut into a hard material to provide a location for an engineering component, a tyre groove, or a geological channel or depression.

As a verb groove is

to cut a groove or channel in; to form into channels or grooves; to furrow.

As a proper noun key

is .

As a noun keyway is

a slot into which a precision attachment (a key) is fitted.

As nouns the difference between slot and keyway

is that slot is a broad, flat, wooden bar, a slat, especially as used to secure a door, window, etc while keyway is a slot into which a precision attachment (a key) is fitted.

As a verb slot

is to bolt or lock a door or window.