The opposite of stranger is familiar, or family.
The opposite of a company (corporation, enterprise) could be a tradesman, who may have no business entity. The opposite of company meaning guests or accompaniment could be isolation, or solitude.
The plural possessive form of "strangers" is "strangers'." For example, "The strangers' cars were parked outside."
Company of Strangers - Company of Strangers album - was created in 1992.
delusions that people are watching the patient and that he might be in danger from strangers who follow him. The schizophrenia could manifest in the opposite reaction, that the patient must protect himself by attacking others, either known friends or strangers.
A full of strangers
There is no specific collective noun for strangers, in which case a noun suitable for the situation is used, for example a family of strangers, a neighborhood of strangers, a congregation of strangers, etc.
Strangers' is plural.Stranger's is singular.
The duration of The Strangers is 1.43 hours.
The Comfort of Strangers was created in 1981.
Sleeping with Strangers was created in 1994.
Strangers World was created in 1995.
Snarling at Strangers was created in 2006.