A dyad is a group of two, a tetrad is a group of four; for a group of three you can use the term triad.
A dyad in sociology refers to a social group of two individuals. In a dyad, the relationship dynamics are more intense and personal compared to larger groups. An example of a dyad is a close friendship between two people.
A dyad
n*(n-1)/2
A dyad family is a family composing only of a husband and a wife without children.
Dyad is a conversation face to face between two persons particularly, but may include others.
Dyad - 2012 VG was released on: USA: 17 July 2012
Dyad Siad Niad
Dyad... could also be discussion... but dyad means an interaction between two people specifically.
SPELL CHECK! Is what you are in need of.
There are 3 typeas diad duad and dyad
Brooks Dyad