It is my mission to learn to speak Hebrew correctly and volunteer to do recordings for Duo! Bless this guy for trying. In certain cases, he's helpful but most often, I have to turn to other apps to figure out how to say the words. Thank all of you who write out the pronunciations. We could not do this without you.
This is super interesting actually. There is a Netflix series about a space mission to Mars. One of the crew members, a botanist, is Jewish. He sometimes prayed with words baruch ha szem, if I understood correctly - blessed be the name (name of G*d). Here we have baruch haba - blessed coming meaning welcome. Interesting, very interesting.
Well, הבא is "ha-bá" and אבא is "ába".
I am guessing you're asking because the ה is often shortened to just "a" instead of "ha". But even then, the stress is different, so there shouldn't be a problem making a distinction. Besides, אבא in this context wouldn't make sense.