Both phones have a similar design language, with a bezel-less screen and thin chassis. Both are made of plastic with a glass front, as a measure aimed toward cutting costs and making them affordable. They likewise sport an AMOLED display with the same 1080 x 2400 resolution and 60Hz refresh rate.
The vivo V23e 5G comes in two presentations: Sunshine Coast and Moonlight Shadow. Sunshine Coast has a nice gradation of blue and pink/purple, while Moonlight Shadow, as its name might give out, is dark-greyed across the board.
The Y73 also has two main designs: Diamond Flare and Roman Black. I would venture to say that these are more compelling, especially the ridged Roman Black model. Diamond Flare is as colorful as the Sunshine Coast 5G version, but it carries a bit more personality thanks to its mosaic-like layout.
Ultimately, though, design is a question of personal preference. Furthermore, in this department, both phones manage to look premium, despite their price.
When speaking of dimensions and weight, the V23e 5G has a slightly bulkier build and weighs 172g, 2 grams more than the Y73. Other than that, there is not that much of a difference between both phones when evaluating how they feel in the hand.