Origin: Germanic Old English suffix
Relationship has 5 different meanings across 1 category:
a relation between people; (`relationship' is often used where `relation' would serve, as in `the relationship between inflation and unemployment', but the preferred usage of `relationship' is for human relations or states of relatedness)
"the relationship between mothers and their children"
a state of connectedness between people (especially an emotional connection)
"he didn't want his wife to know of the relationship"
a state involving mutual dealings between people or parties or countries
"The new trade agreement marked a turning point in the strained relationship between the two neighboring countries."
(anthropology) relatedness or connection by blood or marriage or adoption
"The genealogist spent hours tracing their relationship to the distant ancestor, confirming that they were indeed connected through a line of cousins and adopted siblings."
Connection or association; the condition of being related.
"The new policy changes the relationship between the two departments by requiring them to share resources directly."
In plain English: A relationship is a connection between two people that involves feelings, actions, and how they treat each other.
"We have a close relationship with our neighbors."
Usage: Use this term to describe any connection between people, objects, or ideas rather than just blood ties. It often functions as an uncountable concept when referring to general associations but takes a plural form for specific pairs of individuals.
The word relationship is formed by combining the noun relation with the suffix -ship to indicate a state or condition. It entered English as a compound term describing the connection between people or things based on their prior association.