"diagram" - key terms from Wikipedia

activity diagram
argand diagram
block diagram
boiling point diagram
causal loop diagram
chromaticity diagram
circuit diagram
class diagram
class diagram	showing
constellation diagram
context diagram
data flow diagram
data structure diagram
diagram
diagram	at right
diagram	of a raid
diagram	of several
diagram	with one vertex
each feynman diagram
euler diagram
feynman diagram
first diagram
flow diagram
hr diagram
influence diagram
knot diagram
mo diagram
module diagram
network diagram
phase diagram
pinout diagram
polar area diagram
polar diagram
polarization diagram
pourbaix diagram
schematic diagram
see diagram
sequence diagram
shield of the trinity diagram
south west trains diagram
spacetime diagram
splitting diagram
state diagram
state machine diagram
system context diagram
timing diagram
ts diagram
use case diagram
venn diagram
voronoi diagram