Can you tell me what each letter on the wave represents

From the figure, we can conclude:
[tex]\begin{gathered} A=_{\text{ }}Amplitude \\ B=_{\text{ }}Wave_{\text{ }}length_{\text{ }} \\ C=_{\text{ }}Crest \\ D=_{\text{ }}Trough \\ \end{gathered}[/tex][tex]F=_{\text{ }}Equilibrium[/tex]