What does the webpage window on the screen refer to? What's the difference between a browser window and a browser window?

what does the web page window on the screen refer to? What"s the difference between a browser window and a browser window?
which is bigger? Ask for an answer from a straight point of view. be deeply grateful!

Mar.18,2021

you mean iframe?
https://www.jmjc.tech/tutoria. this?

MySQL Query : SELECT * FROM `codeshelper`.`v9_news` WHERE status=99 AND catid='6' ORDER BY rand() LIMIT 5
MySQL Error : Disk full (/tmp/#sql-temptable-64f5-1e50aa4-450c0.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1e50aa4-450c0.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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