These characters are emojis that are recognized by the Unicode standards which defines what each character presents.
The exact look for them is different for each OS, and each application, but all depict the same thing.
The globe (🌏) is Unicode character 1F30F
and is calledcalled EARTH GLOBE ASIA-AUSTRALIA. the 2nd one (✅) is calledcalled WHITE HEAVY CHECK MARK and is Unicode 2705.
In that manner, there are thousands of emojis, some that every application supports and some with less support. See complete list here http://www.fileformat.info/info/emoji/browsertest.htmhttps://www.fileformat.info/info/emoji/browsertest.htm