A singular noun is a noun referring to just one person or thing, for example 'cat'. When you want to show that something belongs to that person or thing, you add a possessive apostrophe and an 's'.

The general AP style numerical rule is to spell out numbers of nine or lower and use digits for those higher than 10. That’s ...

Adjectives must agree with the noun in gender (masculine or feminine) and number (singular or plural ... the first noun that is being compared. Possessive adjectives in French Possessive ...

Thanks to texting, email and social media, people are writing more than ever these days. That’s not to say people are writing ...