英和和英

the act of forming into groups

a close relationship

close in relationship

of a relationship, the state or quality of intimacy

a close connection

the condition of being closely connected to each other

the degree to which a relationship is intimate

being joined in close association

the state of being connected

on a fair footing

relation to someone or something

a relationship

be on terms of intimacy

to relate a number of things to each other

to establish a relation to anything―establish a connection with anything

to have a relation with someone or something

place into a mutual relationship

be in close contact with…

There is an intimate relation between the two―a close connection between the two―The two are intimately related to each other―closely connected with each other.

the condition of having a close relationship with someone or something

of something or someone, to have a close relationship

connection

have a breach in relations

friendly association

The relation is complicated.

the relation between the two

an intimate relationship

meretricious relationships

to sever relations―break off relations―sever connections―cut the connection―（between the two）

to force a person to become closely involved in something