Green Emoji not syncing from iPad to Mac

What I did: I added a Green Circular Emoji to a note on my iPad.

What happened: I noticed that in the note on my Mac there is a tiny square with a question mark in it on my Mac where the emoji should be. I also noticed when I brought up the emojis on my mac that only the red and blue circular emojis I use are there, not green or other colors that are on the ipad. Trivial, I know, but just not sure ow to fix it. Thanks

What I expected:

Things that might be helpful to know (Agenda version, OS and model, etc):

Is it possible your Mac is using an older operating system which doesn’t include those emoji in the font?