For pedantry, those are hyphen/minus characters. The widths of hyphen/minus, en dash, and em dash are different. They're three completely different characters, different Unicode code points and everything:

- hyphen/minus
\– en dash
\— em dash

And you can get to them easily from the iOS keyboard by long pressing on hyphen/minus.

It appears to be a broiler, or what folks in the restaurant trade would call a salamander. Typically used for melting cheese on top of things or giving them a nice browned crust. The wire rack underneath the broiler pan is likely for warming, or for holding deeper/taller bakeware for broiling (you'd remove the broiler pan to make room).

US combination ranges (oven and stovetop in one unit) will often have a warming drawer or broiler underneath the oven, where it simply reuses the oven's heating element.