Q:

Is it ok to downvote questions asking about difference between two things?

Is it ok down vote a questions asking about difference between two things?
Just like

What is the difference between Intent ACTION_SEND and Intent ACTION_APPCOMPAT_SEND? Which one is better than other? When to use one over other?
What is the difference between Android and Java? Why Google developed Android?How it's working?

I mean this all questions answer found by only one Google Search.

A:

It's ok to downvote whatever you feel like, as long as you're not targeting anyone with serial votes.
I'd say your examples definitely fall under "does not show any research effort" from the tooltip.

