Atrophy – Partial or complete wasting away of a part of the body

Learning curve – Relationship between proficiency and experience

Overlearning – Practicing newly acquired skills beyond the point of initial mastery

Spaced repetition – An evidence-based learning technique performed with flashcards

image forgetting curve

define forgetting curve

wikipedia forgetting curve

weblio forgetting curve

kotobank forgetting curve

jisho forgetting curve