Caltrop or puncture vine (Tribulus terrestris); to thatch (a roof)

Roberts

Benz (name); Karl Benz (1844-1929), motor car pioneer

Linz (city in Austria)

Graz (city in Austria)

Lorentz (name); Hendrik Lorentz (1853-1928), Dutch physicist, 1902 Nobel laureate

Mainz (city in Germany)

lit. earthen steps and a thatched hut; frugal living conditions (idiom)

Konstanz (Germany)

Leibniz (name); Gottfriend Wilhelm von Leibniz (1646-1716), German mathematician and philosopher, co-inventor of the calculus

Hogwarts (Harry Potter)

Horowitz (name)

Bill Gates (1955-), co-founder of Microsoft