Grammar-The meaning and structure of words
Rhetoric-The use of words to persuade or influence others
Logic-The use of reasoning and calculation to prove a point
Arithmetic-Numbers in the abstract sense, also the basic operations of those numbers e.g, adding, subtracting, multiplication, division, fractions, decimals, percents
Geometry-Numbers in space e.g, shapes, measurement, dimensions, etc.
Music-Numbers in time e.g, time signatures, intervals, whole notes, quarter notes, etc.
Astronomy-Numbers in time and space e.g., spinning earth, which orbits the sun, which makes up a solar system moving in a galaxy, seasons, weather, etc.