Answer: The terms "alumni" and "alumnus" both refer to people who have graduated from a school, college, or university. However, there is a difference in how the terms are used.
"Alumnus" is the singular form of the word and is used to refer to a single male who has graduated from an institution. For example, "John is an alumnus of Harvard University."
"Alumni" is the plural form of the word and is used to refer to a group of people who have graduated from an institution. It can refer to a group of all males or a group that includes both males and females. For example, "The alumni of Harvard University gathered for their 50th reunion."
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