How do the attributes woocommecre?

Tell me ozhaluysta . The attributes can separately exist without the variations? Let's say there are 150 grams of product and 250 grams so you can click and it went with the order
June 3rd 19 at 19:08
1 answer
June 3rd 19 at 19:10
The attributes in the database and in the system exist separately from the goods. But they are universal characteristics of the goods.
It may be attribute 150gr., 200gr. ... but they don't identificeret alone product. Ie 150g. can be anything. But in conjunction they define variation.
If you display just a list of attributes and the user clicks on 150gr., it is a product 150gr. should go in order?

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