The word mathematics comes from Ancient Greek máthēma (μάθημα), meaning "that which is learnt," "what one gets to know," hence also "study" and "science". The word for "mathematics" came to have the narrower and more technical meaning "mathematical study" even in Classical times.
另外
-ics suffix
(in nouns)
the science, art or activity of
e.g.
physics
economics
dramatics (study or practice of theatrical arts)