Alumnus/Alumna: Alumni or Alumnae (Alumnus refers to a man and Alumna to a woman, Alumni refers to men or men and women, and Alumnae to women; Cans are often used in the singular, and Alaun/Alumnen are used informally as gender-neutral singular and plural forms) Bacillus: BacilliCactus: Cactus or Cactus Focus: herd or center of focus, herd. TEST – PLURAL FORMS. The hooves is the oldest, traditional hoof of plural shape. Focusses is an alternative form of focus. English practices plural nouns. Names like this include: pants, jeans, glasses, savings, thank you, steps, stairs, thumbs, congratulations, tropicals, salaries, glasses, suburbs, goods, senses, But sometimes users send forms with errors, such as lack of necessary information or invalid value. 8 When the singular noun ends on -us, the plural rounding is frequent -i. As verbs, the difference between focal lengths and priorities lies in the fact that Focusses (British) is (focal) while the center is (focal). .