> {} **** {}{}{} **** {}{} {} **** {}{}
You state:
> "From what I know, when used with a verb stem indicates a purpose."
But and are all _**nouns**_ ; therefore, the "Verb in {} (continuative form) + " construct you speak of is not applicable here.
Instead, what you need to be looking into are the basic golden rules:
> Noun + **** functions _**adjectivally**_ and
>
> Noun + **** functions _**adverbially**_.
Thus, means " **to touch out of mere caprice** " or simply " **to touch just for fun** ".
Likewise, means " **to brush off mischieviously** ".
And , " **to let pass ostensibly (for your own good)** "