A pin is a piece attacking two pieces with the greater value piece hidden behind the weaker value piece. A skewer is the same but the weaker value hidden behind the great value piece. What is it called when both pieces are the same or carry roughly the same value (bishop and knight)?
Edit: I've changed the board layout to better illustrate the question removing a defensive position for black. Thanks EscherehcsE, Chess_com_syndrome and jerry1228 for pointing out the issue with the setup.
