German language uses very often compound words to state things more precisely. In German it's common to write those words together. In English this is to be found also quite often.

Some examples       Ohr = ear   Innenohr = inner ear   Ohrmuschel = outer ear   Ohrläppchen = earlobe           Garten = garden   Gemüsegarten = vegetable garden   Obstgarten = fruit garden   Ziergarten = ornamental garden