A chord is just several notes that are stacked on top of each other.

True
False

True

Non-terrain chords are specifically just 3rds stacked on top of each other

True
The person above said it so I’ll say it too lol

Very true. in today’s age anything is possible.

It depends on what type of third separates the three notes.for example: if you have two mayor thirds is an "aumented chord"if you have two minor thirds is an "diminued chord"if you have one mayor first and then one minor is a "mayor chord"and inverted is a "minor chord"