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.
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.