Shavuot, the Festival of Weeks has several profound roots an layers. As Chag Matan Torah, we remember the gift of Torah and how we can receive Torah now, and how the wilderness provides a powerful place for revelation. As Chag Ha Bikkurim, we celebrate the summer first fruits. The Counting of the Omer, a later rabbinic practice, calls us to reflect and enact spiritual refinement. Shavuot calls us to integrate these aspects - thus I feel called to offer the additional name Chag HaShlemut.