You can suggest a new alias, but they must be approved by an administrator before they are activated.
An example of how to use this: (Neon_Genesis_Evangelion is the tag and Evangelion is the alias. Evangelion -> Neon_Genesis_Evangelion)


Alias To Reason
bunny (13951) rabbit (2882) same thing
eyes_closed (103367) closed_eyes (173109)
cyan_hair (18) aqua_hair (50564) Same thing, really
turquoise_hair (6) aqua_hair (50564)
ichigo_(k-on!) (0) wakaouji_ichigo (141) full character name
tewi (4) inaba_tewi (9245) Combine the tags
race_queen (2402) racequeen (0) removing the space
tagme_(artist) (288) artist_request (50596)
katekyo_hitman_reborn! (1024) katekyo_hitman_reborn (854)
tie (926) necktie (160263)
kyuubee (1313) kyubey (6682)
sakuraba_milfeulle (1) milfeulle_sakuraba (462) The second is much more used.
defoko (2) utane_uta (125) fan nickname to official name
willaim (0) petticoat (7535) I love it.
cop (0) police (3461)
xmas (2) christmas (15571)
boobies (2) breasts (726874)
boobs (16) breasts (726874)
bunny_ears (21449) rabbit_ears (5405)
yamiko (96) yamiya (71) http://www.pixiv.net/member.php?id=176223 artist's pixiv is やみや
big_boobies (0) big_breasts (218)
big_boobs (0) big_breasts (218)
lord_genome (12) lordgenome (175) Lordgenome is the official translation but alot of fans use Lord Genome
tengen_toppa_gurren-lagann (614) tengen_toppa_gurren_lagann (6905) Official spelling is gurren_lagann
blond_hair (273) blonde_hair (611530)
love_is_war (3) koi_wa_sensou_(vocaloid) (551) English name to Japanese name
cosmo_p (0) cosmo_(bousoup) (32) Artist's full username
spiked_hair (20380) spiky_hair (1379)
cloud (108163) clouds (4999) plural (many clounds on a picture)
moero!_justice_gakuen (75) project_justice (10) Japanese to English title
shiritsu_justice_gakuen (131) rival_schools:_united_by_fate (9) Japanese to English title
kemonomimi (291) animal_ears (302723) Japanese and English synonyms.
protoman (0) blues_(rockman) (105) US name=JPN name
toono_akiha (775) tohno_akiha (391)
blushing (84) blush (847044) The same thing, and blush is more common.
griffin (157) griffin (157)
soryu_asuka_langley (2771) souryuu_asuka_langley (6588)
ultimate_madoka (3199) goddess_madoka (826) same thing, latter is more popular
gryphon (8) griffin (157)
donut (42) doughnut (4954)
horo (87) holo (1565) official spelling
megaman (31) rockman (4925) USA ver.--->Jpn ver.
megaman_(series) (0) rockman_(series) (1) USA ver. --> Jpn ver.
fatal_frame_iv (0) fatal_frame_4 (223) Roman Numerals
female_protagonist_(pokemon_bw2) (262) mei_(pokemon) (2253) Official name given to the female protagonist in Pokémon Black 2 and White 2.
male_protagonist_(pokemon_bw2) (132) kyouhei_(pokemon) (550) Official name given to the male protagonist in Pokémon Black 2 and White 2.
double_buns (360) double_bun (42481) Same concept, one just has the plural.
laugh (121) laughing (5888) Same thing
hayate_no_gotoku (1) hayate_no_gotoku! (2483)
alicia_satsuki_mclean (0) alicia_satsuki_mcclane (1)