Emeritus and Far back

Emeritus adjective - Honorably retired from assigned duties and retaining your title along with the additional title `emeritus' as in `professor emeritus'.

Far back and emeritus are semantically related. In some cases you can use "Far back" instead an adjective "Emeritus".

Emeritus and far back are semantically related. Sometimes you can use "Emeritus" instead an adjective phrase "Far back".