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 satisfy; to content; to be equal to the wants or demands of.
To be enough or sufficient; to meet the need (of anything); to be adequate; to be good enough.
To furnish; to supply adequately.