What does Bhavya mean?
From the Sanskrit भव्य (bhavya), 'grand, magnificent, splendid, noble, becoming'. A genuine classical adjective, used for both girls and (less often) boys.
What does Riddhi mean?
From the Sanskrit ऋद्धि (ṛddhi), 'prosperity, success, abundance, good fortune'. In one Puranic tradition Riddhi is a consort of Ganesha (paired with Siddhi), though Ganesha's marital status varies across texts.