Flexbox or Css Grids?

I use flexbox for layouts but is it necessary to learn both?
Which one is better ?
Should i learn both to use em together?

Comments

[Adam Crockett]

I use flex alot more than grid but if I do wrap flex in grid because I feel that grid is very good for overall layout.

Learn flex the grid

[0xKirz]

I love using flexbox more than grid i think flexbox is more flexible.

[Danny Engelman]

Apples or pears, Sets or Maps, left arrow key or right arrow key?