This is the flag of Republic of Cameroon. It consists of three straight bars of green, red, and yellow. There is a yellow star
⭐️ in it. The size of the star is not specified, so it is different, but it must be in the center. The national flag is rectangular, with a ratio of length to width of 3:2. It is displayed as CM on some platforms. It generally means Cameroon or within the territory of Cameroon. Its capital is Yaoundé.
🇨🇲 is the Emoji of a country/region‘s flag, and its meaning is flag: Cameroon. The Emoji 🇨🇲 is composed of two regional indicator letters, namely 🇨 and 🇲. The country/region's 2-letter code for Cameroon is CM, so the letters corresponding to the two region indicator letters are C and M. 🇨🇲 is displayed as a whole flag on most platforms and as a two-letter symbol on a few platforms.