Allah created everything in pairs? Quran Errors?

My question is about the verse “And of everything We have created pairs, that you may remember” [adh-Dhariyat 51:49]

Does the word pairs [zawjayn] include two variations of the same thing, such as apples for example?

Does the word “pairs” occur in the same context in all the verses which speak of the creation of everything in pairs? Can you give some examples of the usage of this word, along with evidence? https://islamqa.info/en/answers/223457/meaning-of-and-of-everything-we-have-created-pairs