Note that these uses differ significantly from the ordinary English meaning of "observer".

Throughout the decades, the theatre's uses differed until it closed in the mid-1990s.

The use of symbols and the order of the coordinates differs between sources.

The use of Pan differs in a high degree from the English honorifics.

This use of swears differs in that it serves a grammatical purpose during a discussion.

The length is at least 11-bit times; standard use as of today are 13-bit times, and therefore differs from the basic data format.

Their use in contemporary Cuba may differ from the original context in which they were created.

He pointed out that the use of the term race differed from the way geneticists classify population groups.

The use of accidentals in medieval and renaissance music differs significantly from modern practice.

The use of green tea in cultural and traditional settings may differ from concepts accepted by current Western medicine.