So I was on Discord, and someone was talking about abbreviations for Doctor Who stories, and how many of them share an initialism. So I decided to write them all out and see what I noticed. But first, I had to set some rules for consistency. For an initialism, it should be every word I think, not excluding the, of, and, etc. so I’ve included every word. Compound words counted for one letter, but hyphenated for two. The symbol & was treated as “and” so A. Lastly, if the title contains a numeral, it was assigned as if it was spelled out, also see rules on hyphenated words.
So the ones that share initialisms:
AOTC - Attack of the Cybermen, Ascension of the Cybermen
B - Battlefield, Blink, Boom
D - Dragonfire, Dalek, Doomsday
DOTD - Day of the Daleks, Destiny of the Daleks (the 50th anniversary special starts with “The,” so is TDOTD)
E - Earthshock, Enlightenment, Extremis
EOTD - Evolution of the Daleks, Eve of the Daleks
F - Frontios, Flatline
K - Kinda, Kerblam!
L - Logopolis, Listen, Lux
M - Meglos, Mindwarp, Midnight
POTD - Planet of the Daleks, Planet of the Dead
R - Robot, Rose, Rosa, Resolution, Rogue
ROTC - Revenge of the Cybermen, Rise of the Cybermen
ROTD - Resurrection of the Daleks, Revelation of the Daleks, Remembrance of the Daleks, Revolution of the Daleks
S - Shada, Snakedance, Survival, Smile, Spyfall
T - Terminus, Timelash
TA - The Aztecs, The Ark, The Awakening
TBB - The Beast Below, The Big Bang (in the same season)
TC - The Crusade, The Chase, The Caretaker
TCOA - The Claws of Axos, The Caves of Androzani
TD - The Daleks, The Dominators, The Dæmons
TDD - The Doctor Dances, The Doctor’s Daughter
TEOTW - The Enemy of the World, The End of the World
TG - The Gunfighters, The Giggle
TH - The Highlanders, Time Heist
TI - The Invasion, Thin Ice
TL - Turn Left, The Lodger
TM - The Massacre, The Moonbase, The Mutants
TPOTD - The Power of the Daleks, The Power of the Doctor
TR - The Rescue, The Romans (back to back)
TS - The Sensorites, The Savages, The Smugglers, The Snowmen
TSE - The Sontaran Experiment, The Stolen Earth
TSM - The Space Museum, The Sun Makers
TSOD - The Seeds of Death, The Seeds of Doom, The Sound of Drums
TSP - The Space Pirates, The Satan Pit
TTC - The Tsuranga Conundrum, The Timeless Children
TTD - The Three Doctors, The Twin Dilemma, The Two Doctors
TTM - The Time Meddler, The Time Monster
TV - The Visitation, The Vanquishers
TW - The Witchfinders, The Well
TZI - The Zygon Invasion, The Zygon Inversion (intentionally named of course)
U - Underworld, Utopia
VOTD - Voyage of the Damned, Victory of the Daleks
Completely pointless, just thought it was interesting, and it happens quite a lot.