Die out and Fade out

Die out verb - Become extinct.

Fade out and die out are semantically related in vanish topic. In some cases you can use "Fade out" instead a verb "Die out", when it comes to topics like become extinguished.

Fade out verb - Become weaker.

Die out and fade out are semantically related in vanish topic. You can use "Die out" instead a verb "Fade out", if it concerns topics such as become extinguished.