Tone
This picture demonstrates contrast of tone. There is each end of the gray scale within it but no grays in between, only black and white.
This picture demonstrates affinity of tone because each shade of gray within this picture is within the same part of the gray scale. The tone doesn’t stray from the specific portion of the gray scale.
This picture demonstrates noncoincidence of tone because the subject is obscured by the darkness of tone. You are unable to make out the face due to the tone.