(2020-02-19, 9:39)Jaco van der Molen Wrote: 11203
Tile 2 x 2 Inverted with Groove
Plate 2 x 2 Inverted with Groove
To me, this one is still a tile (along with 35459, probably). Because it's inverted, it's the removal of its anti-studs (or whatever you want to call the underside connections) that makes it smooth and gives it that name. In other words, a regular tile removes the studs but still has the bottom connections; an inverted tile removes the bottom connections but still has the studs.