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 (11268) rabbit (2911) same thing
eyes_closed (101977) closed_eyes (122266)
cyan_hair (16) aqua_hair (40586) Same thing, really
turquoise_hair (4) aqua_hair (40586)
ichigo_(k-on!) (0) wakaouji_ichigo (141) full character name
tewi (4) inaba_tewi (8872) Combine the tags
race_queen (1696) racequeen (56) removing the space
tagme_(artist) (288) artist_request (43939)
katekyo_hitman_reborn! (941) katekyo_hitman_reborn (853)
tie (871) necktie (121803)
kyuubee (1322) kyubey (6500)
sakuraba_milfeulle (1) milfeulle_sakuraba (455) The second is much more used.
defoko (2) utane_uta (107) fan nickname to official name
willaim (0) petticoat (4703) I love it.
cop (0) police (2588)
xmas (2) christmas (12758)
boobies (2) breasts (509991)
boobs (4) breasts (509991)
bunny_ears (18056) rabbit_ears (6044)
yamiko (91) yamiya (71) http://www.pixiv.net/member.php?id=176223 artist's pixiv is やみや
big_boobies (0) big_breasts (176)
big_boobs (0) big_breasts (176)
lord_genome (12) lordgenome (174) Lordgenome is the official translation but alot of fans use Lord Genome
tengen_toppa_gurren-lagann (614) tengen_toppa_gurren_lagann (6695) Official spelling is gurren_lagann
blond_hair (272) blonde_hair (488889)
love_is_war (3) koi_wa_sensou_(vocaloid) (525) English name to Japanese name
cosmo_p (0) cosmo_(bousoup) (24) Artist's full username
spiked_hair (12852) spiky_hair (1459)
cloud (77101) clouds (5917) plural (many clounds on a picture)
moero!_justice_gakuen (69) project_justice (10) Japanese to English title
shiritsu_justice_gakuen (128) rival_schools:_united_by_fate (9) Japanese to English title
kemonomimi (288) animal_ears (209564) Japanese and English synonyms.
protoman (0) blues_(rockman) (97) US name=JPN name
toono_akiha (757) tohno_akiha (351)
blushing (68) blush (613850) The same thing, and blush is more common.
griffin (127) griffin (127)
soryu_asuka_langley (2766) souryuu_asuka_langley (5139)
ultimate_madoka (2895) goddess_madoka (828) same thing, latter is more popular
gryphon (8) griffin (127)
donut (35) doughnut (3888)
horo (87) holo (1417) official spelling
megaman (28) rockman (4091) USA ver.--->Jpn ver.
megaman_(series) (0) rockman_(series) (1) USA ver. --> Jpn ver.
fatal_frame_iv (0) fatal_frame_4 (220) Roman Numerals
female_protagonist_(pokemon_bw2) (262) mei_(pokemon) (1657) Official name given to the female protagonist in Pokémon Black 2 and White 2.
male_protagonist_(pokemon_bw2) (133) kyouhei_(pokemon) (509) Official name given to the male protagonist in Pokémon Black 2 and White 2.
double_buns (361) double_bun (29273) Same concept, one just has the plural.
laugh (120) laughing (4715) Same thing
hayate_no_gotoku (1) hayate_no_gotoku! (2450)
alicia_satsuki_mclean (0) alicia_satsuki_mcclane (1)