point
small mark or exact spot
Root
- point / punct: point, prick, or tiny detail
Other words with the point / punct root
- compunction: uneasy guilt or moral pricking
- punctilious: extremely careful about small details or rules
- punctual: on time
- punctuation: marks that organize writing
- puncture: to pierce with a point
Point is the familiar tiny-detail hook behind punct.
She marked the exact point where the graph changed.