Conventionally:
Run Level 1 = Single User Mode
Run Level 2 = Single User Mode with Networking
Run Level 3 = Multi-User Mode / text interface
Run Level 4 = Not Defined
Run Level 5 = Multi-User Mode / graphical interface
Run Level 6 = Reboot

For the curious. Why is my handle runlevel3? It comes from old UNIX SVR4 run levels, which Linux distributions mimicked for many years until the advent of Solaris 10's SMF and later systemd on Linux distributions.

When socially networking, I'm operating at runlevel3...