# What does degeneracy and multiplicity in Term symbol mean?

$$^{2S+1}L_J$$ was the term symbol.

I watched a video online saying $$2J+1$$ was the fold of degeneracy to the term symbol.

Specifically, for nitrogen, the term symbol for the lowest energy was $$^4S_{3/2}$$ which means it has 4 fold degeneracy. But I couldn't figure out how this could be(?) as all the electron are at spin up states, and there's only 3 orbit in $$2p$$ shell.

Further, what's the meaning of multiplicity $$2S+1$$ mean here?

The multiplicity$$(2S+1)$$ in the term symbol shows the number of possible orientation of TOTAL spin, of electrons in an orbital. Here $$2S+1=4$$, gives $$S=3/2$$, have 3 unpaired electrons in 2p shell. Thus the possible total spin orientations are (-3/2,-1/2,1/2,3/2). Number of possible total spin values are, hence 4.