This character is a Other Symbol and is commonly used, that is, in no specific script. The character is also known as dog dirt.
The glyph is not a composition. Its East Asian Width is wide. In bidirectional text it acts as Other Neutral. When changing direction it is not mirrored. U+1F4A9 offers a line break opportunity at its position, except in some numeric contexts.
The CLDR project calls this character “pile of poo” for use in screen reading software. It assigns these additional labels, e.g. for search in emoji pickers: bs, comic, doo, dung, face, fml, monster, pile, poo, poop, smelly, smh, stink, stinks, stinky, turd.
This character is designated as an emoji. It will be rendered as colorful emoji on conforming platforms. To reduce it to a monochrome character, you can combine it with Variation Selector-15: 💩︎ See the Emojipedia for more details on this character’s emoji properties.
The Wikipedia has the following information about this codepoint:
Pile of Poo (💩), also known informally as the poomoji (slang), poop emoji (American English), or poo emoji (British English), is an emoji resembling a coiled pile of feces, usually adorned with cartoon eyes and a large smile. Originating from Japan, it is used as an expression in various contexts. Some possible uses include: as a response of passive aggressive emotion; for comedic value; as commentary on what's bad; or as its literal meaning.
The emoji is in the Miscellaneous Symbols and Pictographs Unicode block: U+1F4A9💩PILE OF POO.