From the time of Confucius until the 20th century the death of a parent would commonly mean a three-year mourning period for their child.
The incest taboo, although it can be anything, most commonly means sisters and brothers, parents and offspring.
This phrase also applies to living a lavish or abundant lifestyle, hence "You are eating money," which commonly means one is successful and doing well.
In the ecclesiastical sense of the term, "hierarchy" commonly means the body of persons who exercise authority within a Christian church.
Until recently people dismissed both ideas as impossible - commonly meaning that they couldn't see how to do them, or would be upset if they could.
Military expenditure as the name suggests commonly means the expenditure by a country's government on their military forces.
But it commonly meant boastful or vainglorious, as it did in the hands of the playwright.
In Australia it commonly means on of two bicentennials.
Simplex communications, most commonly meaning all communications in one direction only.
Many acts release a compilation after three albums, which commonly means after only three years of career in the music market.