Crossword Genius

Are, in certain ways, general goods (5)

Ross

I believe the answer is:

wares

I'm a little stuck... Click here to teach me more about this clue!

'ways general goods' is the definition.
'wares' can be an answer for 'goods' (wares is a kind of goods). I am not sure about the 'ways general' bit.

'are in certain' is the wordplay.
'in' indicates putting letters inside.
'certain' becomes 'ws' (I can't explain this - if you can you should give a lot more credence to this answer).
'are' put into 'ws' is 'WARES'.

Can you help me to learn more?

(Other definitions for wares that I've seen before include "Merchandise" , "Stock and products - swear it" , "Goods for sale - swear it" .)

I've seen this clue in the Evening Standard.
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