s, o, e, l, n, p, h, m, t, y are letters that make 'telephone system'
phone, el, system, hone, telephone, phone system, te, em, pH, phon, EL, one, on, stem, NE, LE, Ho, Ne, Te are words within 'telephone system'
1 possible definitions for 'telephone system'
Under this definition, telephone system is a noun and has the following properties:
phone system has the same meaning as telephone system
'telephone system' can be a type of communication system.
MEDLINE is a type of telephone system.
cable, transmission line, phone, switchboard, patchboard, plugboard, telephone, telephone set, line, exchange, telephone exchange, central are parts of 'telephone system'.