both persons; both gentlemen
Formal term used in news reports, official statements, or respectful contexts to refer to two people, typically men or people of status. Often used with surnames or titles.
The two gentlemen reached an agreement at the meeting.
Both Mr. Tanaka and Mr. Sato attended.
Mr. Yamada and Mr. Suzuki held talks.
The two men agreed on economic policy.
The two men are scheduled to hold talks next week.
両人 is a slightly old-fashioned, formal term for 'the two persons' similar to 両氏, but it lacks the honorific nuance tied to using surnames or titles.
二人 is the everyday, neutral word for 'two people', whereas 両氏 is formal and used mainly in news or official writing about respected individuals.
氏名 means a person's 'full name' and shares the kanji 氏 with 両氏, but the two words are unrelated in meaning.
Compound of 両 (both) and 氏 (honorific suffix for a person, originally a clan or family name). The reading りょうし is a standard on'yomi combination.