It's obvious there would be a drop between xmas and new year. The problem here is that you're comparing AngularJS to React the latter of which is too broad of a term. You could narrow down the results by selecting "Programming" as a category:
https://www.google.com/trends/explore?cat=31&q=%2Fm%2F012l1vxv,AngularJS
monotype 2928 days ago. link 1 point ▲ ▼