The thing is, often it's wrong and could mislead people. especially for beginners who would trust the tool too much. You could easily ask "is HTTP same as REST?" And you may receive a table like this (which many people prefer than reading the rest of the response because it's faster) https://imgur.com/a/JRkUIkx same if you ask "is deep learning same as neural networks?" you may receive this https://imgur.com/a/MgVkD4u It can really compare anything and won't complain. and there are much more subtle questions.