Field

camp

(land area free of woodland, cities, and towns; open country)

camp

(wide, open space used to grow crops or to hold farm animals)

camp

(place where a battle is fought)

camp

(sports: area reserved for playing a game)

camp

(physics: region affected by a particular force)

camp

(heraldry: background of the shield)

cos

(mathematics (algebra): a commutative ring satisfying the field axioms)

terreny

(course of study or domain of knowledge or practice)