Unconnected
Unconnected, different, distinct, detached, disconnected, autonomous, individual, several, unrelated, discrete, disparate, divorced, independent, respective, and particular.
Set apart from
Set apart from, not attached to, disjoined from, cut off from, isolated from, free-standing, alone, detached, unattached to, not joined to, fenced off from, segregated from, shut off from, by itself, and self-contained.
Part
Divide
Divide, lie between, stand between, bisect, partition, come between, keep apart, and intersect.
Disconnect
Disconnect, break apart, disengage, unyoke, disassemble, disjoin, split in two, sever, unravel, become disconnected, come away, part company, go their separate ways, split, say goodbye/farewell/adieu, disperse, scatter, pull apart, detach, uncouple, disarticulate, disunite, disaffiliate, divide in two, disentangle, become detached, come apart, break off, part, go different ways, split up, say one's goodbyes, and disband.
Split up
Split up, part, part company, become estranged, get divorced, break up, stop living together, reach a parting of the ways, divorce, and get a divorce.