What does Tariq mean?
From the root t-r-q (ط-ر-ق, 'to knock, to come by night'), meaning 'one who knocks or arrives at night, night-visitor'. By extension it denotes the bright night/morning star; Surah at-Tariq is named for it. Borne by the commander Tariq ibn Ziyad (Gibraltar = Jabal Tariq).
What does Hamza mean?
Commonly understood as 'lion', and also 'strong, steadfast'. Linked to the root h-m-z and to a plant with a sharp, pungent taste. Borne by Hamza ibn Abd al-Muttalib, the Prophet's uncle, called 'Lion of God'.