This is the 248th most frequent Thai word.
เร
"We" or "us" (informal).
In this sentence, 'เรา' is used to represent the first-person plural pronoun meaning 'we', considering a group including the speaker.
เรากำลังจะไปตลาด
We are going to the market.
Here, 'เรา' is used to mean 'I', as it is often used in informal Thai speech as a first-person singular pronoun.
วันนี้เราไม่ลืมการบ้าน
Today, I didn’t forget my homework.
In this sentence, 'เรา' indicates a possessive form associated with the first-person plural, meaning 'our' in relation to achievements.