When you speak about these parts of a song( Intro- Chorus- verse-Bridge ...) What do you mean?If a player plays one part in a song is that enough ? Or He/She needs to play all these parts in a song?
There are just the standard parts of many pop songs. The intro (introduction) is at the start and is generally just instrumental, or perhaps with vocals. Then it will then alternate between verses and choruses. The bridge (or bridge passage) is an instrumental section commonly inserted before the last verse.
"Verse" and "Chorus" should be explained in any decent dictionary.
Any musician who can't play all of the song isn't worth employing!