Question

1. I like kimchi mild.
(What is the part of speech of 'mild'? Is 'mild' an objective complement?)

2. It touches rough.
3. It feels rough.

(Are both the same in meaning?)

Answer 1

I would phrase #1 this way: I like my kimchi mild. OR I like mild kimchi.

"Mild" is an adjective, whether it's before or after the direct object. An objective complement needs to be a noun.

#2 is incorrect and not used at all.
#3 is correct.