Someone here complained about the translation of these words. So, I've reread all my sources (dictionaries, blogs and personal communications).

The consensus is, mulopyo is just a short form of the word lumulupyo.  Hence, both word should have the same translation.

Take note molupyo  is a misspelling, the correct spelling is mulupyo.  It is a noun and it should not have a verbal prefix mo-. I hope this will satisfy your curiosity.