To notice or view, especially carefully or with attention to detail.
To take note of and celebrate (a holiday or similar occurrence); to follow (a type of time or calendar reckoning).
To comment on something; to make an observation.
To follow or obey the custom, practice, or rules (especially of a religion).
To place in front of, or over against; to set opposite; to exhibit.
To object to.
To attempt to stop the progression of; to resist or antagonize by physical means, or by arguments, etc.; to contend against.
To present or set up in opposition; to pose.