AFS :arch filament system
ANE :anemone
AR  :active region
ARC :arcade
BP  :bright point
CR  :coronal rain
CH  :coronal hole
COR :corona
CHR :chromosphere
CS  :coronal streamer
CT  :coronal transient
CUS :cusp
DB  :disparation brusque
DC  :disk center
DFL :disappearing filament
DFX :disapppearing flux
DF  :downflow
ECL :eclipse
EFL :emerging flux
EPR :eruptive prominence
EFI :erupting filament
EMB :errorman bomb
EVA :evapolation
EVF :evershed flow
FAC :faculae
FC  :filament channel
FLC :flux cancellation
FLG :filigree
FIL :filament
FLR :flare
FP  :footpoint
FS  :full sun
FT :flux tube
FL  :flow
GR  :granulation
JET :jet
LB  :loop brightening
LE  :loop evacuation
LMB :solar limb
LO  :loop
CME :coronal mass ejection
MFL :microflare
MS  :magnetic shear
MT  :mercury transite
MW  :moreton wave
NET :network
NFL :nanoflare
NL  :neutral line
PC  :polar crown
PCH :polar coronal hole
PEN :sunspot penumbra
PFL :postflare loops
PHO :photosphere
PLG :plage
POR :pore
PP  :polar plume
PR  :prominence
QS  :quiet sun
RIB :two-ribbon flare
SPR :spray
SG  :supergranulation
SPI :spicule
SR  :surge
SS  :sunspot
SW  :solar wind
SYN :synoptic observation
SEI :Seismology
TR  :transition region
UF  :upflow
UMB :sunspot umbra
VT  :Venus transite
WAV :wave
WLF :white light flare
XBP :X-ray Bright Point