aeronautics (n.)

the art or practice of flying aircraft

amateur (adj.)

practicing an art or occupation for the love of it, but not as a profession

elocution (n.)

the art of correct intonation, inflection, and gesture in public speaking or reading

gastronomy (n.)

the art of preparing and serving appetizing food

jugglery (n.)

the art or practice of sleight of hand

masonry (n.)

the art or work of constructing, as buildings, walls, etc., with regularly arranged stones

metallurgy (n.)

the art or science of extracting a metal from ores, as by smelting

necromancer (n.)

one who practices the art of foretelling the future by means of communication with the dead

oratory (n.)

the art of public speaking

pedagogics (n.)

the science and art of teaching

photometry (n.)

the art of measuring the intensity of light

polemics (n.)

the art of controversy or disputation

rhetoric (n.)

the art of discourse

statecraft (n.)

the art of conducting state affairs

taxidermy (n.)

the art or process of preserving dead animals or parts of them

topography (n.)

the art of representing on a map the physical features of any locality or region with accuracy

botany (n.)

the science that treats of plants

cosmography (n.)

the science that describes the universe, including astronomy, geography, and geology

linguistics (n.)

the science of languages, or of the origin, history, and significance of words

colleague (n.)

an associate in professional employment