What is a scale and a chord ?

In music, we often come across the terms scale and chords. So, what are these?

1) Scale:-  A scale is a collection of notes played in a specific sequence. There are different types of scales in western music. As, we know there are 12 universal notes in western music, so there are different scales for each and every note. There is a C scale, a D scale and so on....
Example of a scale :-

      C  D  E  F  G  A  B  C/

2) Chords:- A chord is a collection of a few notes which is played at the same instant. There are different and different types of chords also.

Example of a chord :-

  C  E  G

If we play these notes "C","E", and "G" at the same time, this will result in the playing of a chord. Similarly for every 12 universal notes there are chords for each and every note. Example : -  There is a C chord, a D chord and so on....