Difference between 増やす and 増加する?


I know there's a past topic with this question already, but honestly I
couldn't understand the explanation very well.

Thank you very much for the input and time.




The meanings are mostly identical. The one main difference is that 増{ふ}やす is
explicitly 他動詞{たどうし} (transitive), whereas 増加する could be either 他動詞{たどうし}
(transitive) or 自動詞{じどうし} (intransitive) depending on context. The
intransitive version of 増{ふ}やす is 増{ふ}える.

Past there, there are some differences in connotations and register, which are
inherent to the distinction between _kun'yomi_ words and _on'yomi_ words.
There was a recent post about this subject that you might find informative:

_[Difference between onyomi words and kunyomi
words](https://japanese.stackexchange.com/questions/32582/)_

