How it differs from Angular Material Icon Registration?

[technbuzz]

I'm submitting a...

[ ] Regression (a behavior that used to work and stopped working in a new release)
[ ] Bug report  
[ ] Performance issue
[ ] Feature request
[ ] Documentation issue or request
[x] Support request
[x] Other... Please describe:

What is the motivation / use case for changing the behavior?

I am using angular material. We can also register icon using material icons (I haven't done it yet, just read the documentation). Should I go with this library or register via angular material? Has anybody worked with either of them? what are the pros and cons?