A word's connotation is O its part of speech
O its dictionary definition
O its synonyms and antonyms
the feeling associated with it

It's synonyms and antonyms te feeling associated with it.

I think.

either online or traditional classroom can work for students. which is better will depend on students and teacher. students may have trouble following a lesson in classroom while they can study at their own pace online. other students may have trouble staying focus on their own in online classes. teachers are more used to classroom teaching but they may also be more worry about their jobs teaching online classes and work harder.