How to correctly formulate keywords in Keywords?

Question

Search Engine Optimization

There are requests like this:

panels +for bathroom
plastic panels +for bathroom
panel +for room
panels +for balcony
panels +for bathroom
pvc panel +for bathroom
plastic panels +for walls

How can I write them briefly in the description of the page?

PVC plastic panels +for +bathroom +room +balcony

Answer 1

Today, keywords do not affect the issuance in any way.

Answer 2

Based on the name of the meta - tag desciption is nothing more than a description of the page, hence the output in it should be a logical text - a note with the maximum number of keys.
If you just need to add keywords, then there is a meta for this - the keywords tag in it, then you need to write them separated by commas.