Glideslope is associated with ICAO precision approaches, so normal ILS but also MLS or PAR. Since the advent of RNP you now have another type of vertical guidance but it didn't meet the ICAO criteria of precision approach so the term glidepath was used instead. Glidepath should only be seen in the civilian world when associated with ICAO classically classified non precision approach systems but still 3D approaches. Such as LPV, LNAV/VNAV, RNP AR APHC and the avionic specific LP+V, LNAV+V.