#1: Metropolis
Nowadays, it refers to a large city —
particularly an important one.
In ancient Greece,metropolis referred to the mother city of a
colony.
(Corinth, for example, was the metropolis
of Syracuse.)
Metropolis comes from the Greek mētēr ("mother") +polis ("city").
#2: Matrix
Is matrix the mother of all terms?
Maybe not, but the term originates in the Latinmater, meaning
"mother."
The original (now-archaic) meaning of matrix was "uterus." Today the word
usually refers to a situation or set of conditions
in which something develops or forms.