To follow or obey the custom, practice, or rules (especially of a religion).
To take note of and celebrate (a holiday or similar occurrence); to follow (a type of time or calendar reckoning).
To notice or view, especially carefully or with attention to detail.
To comment on something; to make an observation.
To act in violation of some law.
To commit an offense; to sin.
To exceed or overstep some limit or boundary.
To spread over land along a shoreline; to inundate.