Hi everyone! I'll like to know the difference(s) between 'Phase', 'Pole' and 'Line' in Power Engineering

they are all terms associated with connection points on an electrical system. phase and line may be misleading though. phases refer to the number of currents being carried.. for instance, single or three phase systems. the system voltage will vary if you measure phase to phase (phase voltage) or phase to ground (line voltage). pole refers to the number of total connection points to the system and does not necessarily reflect the number of current carrying electrical phases.

Pole refers to electric machines in electrical systems. i.e. we calculate rpm of synchronous machine with this formula ns=(120*f) / p , where "p" is number of pair poles.
Phase and line are related to voltage and current. i.e. we have 2 types of voltages in 3 phase system in star connection. if we measurement voltage between one phase and ground (L-N), this called phase voltage and if we measurement voltage between two phase (L-L), this called line voltage.
good luck