From Part 95, the language describing how certain services require individual licenses to "operate or use". I'm not certain whether the regulations are establishing that "operate" and "use" are the same thing or acknowledging that they are separate activities allowed by the license. I think that the phrase as used here is equating the two words:
§ 95.3 05 Authorization to operate Personal Radio Services stations
Pursuant to 47 U.S.C. 307(e)(1), this rule section authorizes eligible persons to operate part 95 Personal Radio Service stations and part 96 Citizens Broadband Radio Service stations without individual licenses, except as provided in paragraph (a). Such operation must comply with all applicable rules in this part.
(a) Individual licenses. A valid individual license may be required under this part to operate or use stations in a particular service, certain types of stations, stations transmitting on certain channels or frequency bands, or stations transmitting with power above a certain level. Any such requirements applicable to stations in any of the Personal Radio Services are set forth in the subpart governing that specific service. See e.g., § 95.1705. Otherwise, the FCC does not require or accept applications for an individual license to operate any type of Personal Radio Service station.