Is there a general term for a single note or a chord?

For formal, technical purposes (e.g. when discussing musical audiation and other aspects of musical cognition) the terms "acoustic event" or "notated event" or "vertical event" is pretty much standard terminology within psychology of music for referring broadly to any individual single tone or simultaneosly experienced ...

1. What are single notes called?
2. What is it called when you play individual notes of a chord?
3. What is the difference between a chord and a single note?

What are single notes called?

A whole note is a single note that covers the entirety of a 4-beat measure. A half note is a single note that covers half of a 4-beat measure. A quarter note is a single note that covers one-quarter of a 4-beat measure. An eighth note covers 1/8th of a 4-beat measure.

What is it called when you play individual notes of a chord?

An arpeggio is a group of notes played one after the other, up or down in pitch. The player plays the notes of a particular chord individually rather than together. The chord may, for example, be a simple chord with the 1st, (major or minor) 3rd, and 5th scale degrees (this is called a "tonic triad").

What is the difference between a chord and a single note?

What is the difference between notes and chords? The difference between notes and chords is that a note is a single pitch (for example C). Whereby, a chords is a group a notes (for example C, E, G). This is important in music theory because a note will have no characteristic when played on its own.