learn
習 centers on acquiring skill through repetition: learning by practicing or getting used to something.
習 combines 羽 (wings) and 白 (historically 自, nose/self), suggesting a bird learning to fly by repeated practice. The modern 白 is a simplification of the older component.
A young bird (羽) practices flying again and again until it turns white (白) with effort: that repeated practice is learning.
For シュウ, imagine a bird learning to fly by practicing every day: it's a daily 'show' of progress. Show -> シュウ.
practice; training; drill; (an) exercise; workout
learning; study
habit
practice (in the field); training (esp. practical and hands-on); practical exercise; drill
to take lessons in; to be taught; to learn (from a teacher); to study (under a teacher); to get training in
learning; acquisition (of a skill, knowledge, etc.)
practice; exercise; drill
short course; training
apprenticeship; probation; learning by observation
custom; convention; common practice
training institute; school
custom
review (of learned material); revision
as is habit; the way life normally is
habit
preparation for a lesson
training; instruction
supplementary lessons
self-study; teaching oneself
custom; common practice; habit