A hi-hat is a combination of two cymbals and a foot pedal. A rhythmic cymbal used to play a consistent beat along with a kick and snare. A short sharp sound that is used by drummers throughout every genre of music.
A crash does exactly what it says on the tin. A loud sharp crash that rings out and sustains like an explosion of bright noise.
The smallest cymbal in a drum kit. A thin effect cymbal that splashes with a short, sharp splash of sound.
The ride is the largest cymbal in a drum kit, ranging from 18" to 22" in size. A ride will achieve a more sustained ringing sound that is thicker and more solid in tone.