Some Catholics set up "prayer stations" in their homes, placing crucifixes, candles, and sometimes a few small saint statues for their particular devotions. In doing so, they create a special place for the family to offer their prayer. But, they often call these stations a family altar, or home altar, or sometimes a shrine.
However, in Roman Catholicism, a Christian altar is "a table upon which the eucharistic sacrifice is celebrated ..."
And a shrine is "a church or other sacred place to which numerous members of the faithful make pilgrimage for a special reason of piety, with the approval of the local ordinary." (Or the bishops in the case of a national shrine, or the Holy See in the case of an international one).
Within the scope of Roman Catholic doctrine, then, is it permissible to call these home prayer-centers altars or shrines of any sort? If not, what terms have been used by Roman Catholic Officials or Documents to refer to such a space in the home?