Collocations for confinement - noun

close
The animals are kept in close confinement.

solitary
home (AmE)
He was sentenced to six months of home confinement.

involuntary
involuntary confinement to a psychiatric hospital

physical
long-term, short-term

be held in, be kept in
be placed in, be put in
escape
those birds that escape confinement and adapt to new environments

in confinement
He spent eleven years in solitary confinement.

confinement to
their confinement to army barracks