The Holy Grail is different from real cups, vessels, dishes, and plates, is that the Holy Grail is a work of fiction, first appearing in the 11th and 12th centuries in medieval legends; the other things that you mention are real utensils used by men.
Grail Knight travel around the world just to heal the fisher king. This story was told by many in different ways.
The Unholy Grail was created in 1962.
The Children of the Grail was created in 1996.
Grail Prince was created in 2003.
The Mystery of the Grail was created in 1934.
The cast of The Grail - 2002 includes: Magdalena Andersson as The Grail Jim Babel as Eugene
Grail Prince has 576 pages.
Parzival is the real grail knight,not Gallahad
Chasing the Grail was created on 2010-01-26.
There are many false interpretations of the Holy Grail. For example as Mary Magdalene and the bloodline of Christ. But the real Holy Grail is a spiritual path which was described in the Arthurian romances. For an up to date scientific appraisal of the Grail story see http://www.theholygrail.org.uk.
The term "holy grail" is not mentioned in the Bible.
Grail - web browser - was created in 1995-08.