I know what する means in terms of basic usage and obvious usage... I've been studying for a while so like, this isn't going to be a "What's 1 + 1" question hopefully.
The question is to do with how する works with adverbial forms. What is the image you get in your head when someone says like 口にする or 気にする or ようにする or 下にする or 深くする. See I have trouble understanding how する should be envisioned. Is it the sense of doing towards that state represented by the adverb... or is it the sense of doing する in the way of that adverb?
For example, 口にする seems to be like "DO WITH MOUTH" since it means both talk and eat but why not 口でする then if that's the case? And 下にする is like.. different.. it doesn't feel like で but rather toward.... Are these two different に's or two different する's?
I mean... think about Aにする... People often say like it means to "do towards A" but recently I realised it is short for B を A にする...
So what is this する thing then? Is it an action? Is it a stand in for the flow of your life and how it progresses?