"Reflection" is a versatileword that can describe an image seen in a mirror, the act of thoughtfulconsideration, or a scientificphenomenoninvolvinglightorsound.
Noun
the ability to reflectbeamsor rays
a remarkexpressingcarefulconsideration
(mathematics) a transformation in which the direction of oneaxis is reversed
the image of somethingasreflectedby a mirror (orotherreflectivematerial)
he studiedhisreflection in the mirror
a likeness in which left and rightarereversed
expression without words
tearsare an expression of grief
the pulse is a reflection of the heart'scondition
the phenomenon of a propagatingwave (lightorsound) beingthrownback from a surface