What does Naava mean?
From Hebrew נָאוָה (na'avah) 'beautiful, comely, pleasant', as in the Song of Songs ('I am dark and beautiful'). The sense covers both 'beautiful' and 'pleasant/fitting'.
What does Tikva mean?
A Hebrew name meaning 'hope', from 'tiqwah' (תִּקְוָה), root q-w-h. Familiar from 'Hatikvah' ('The Hope'), the Israeli national anthem. Appears as a male name in the Hebrew Bible but is given mostly to girls today.