I thought id make a thread like this one, tell me what you think.
Action: Fast-paced action such as fighting or some other form of agressive activity. Example: Bleach
Adventure: Features characters going on a trip to find their luck or with a specific purpose. Example: FullMetal Alchemist
Drama: Meant to bring emotion out of the reader/viewer, such as sadness, tension, or otherwise. Example: Clannad
Romance: Love, Romantic feelings between characters or the development thereof. Example: Clannad
Ecchi: Sexy and Juicy, but not going overboard. Example: Monster Musume no Iru Nichijou Manga.
Mystery: Unresolved Case, or Mysterious Event, keeps you guessing until the end while catching all the clues and riddles along the way. Example: Umineko no Naku Koro ni.
Psychological: Deals with the philosophy or state of mind, the crazy kind in most cases. Example: Suicide Island
Horror: Fear and Terror related, usually not for the faint of heart. Example: Tokyo Ghoul
Sci-fi: Space-related, futuristic, etc... Example: To Aru Kagaku no Railgun
School Life: Set in campus or some sort of school. Ouran High School Host Club
Supernatural: Deals with unexplained things that do not happen in nature. Example: Fruits Basket
Historical: Usually set in a setting of the past thats part of history, or other settings. Example: Oda Nobuna no Yabou
Mecha: Involves walking vehicles controlled by a pilot, usually futuristic. Example: Eureka Seven
Tragedy: Prepare some tissues or a handy beforehand. Example: Suicide Island
Shounen: Usually aimed towards male teens. Example: Naruto
Seinen: Usually aimed towards male young adults. Example: Sekirei
Shoujo: Usually aimed towards teen girls. Example: Fruits Basket
Josei: Usually aimed towards female young adults. Example: Nodame Cantabile(Manga).
Gender Bender: Changing genders, whether it is by magic or physical means(make up, etc...). Example: Ranma 1/2
Harem: One character surrounded by many characters, usually of the opposite sex who are attracted towards the one character. Example: Monster Musume no Iru Nichijou
Martial Arts: Judo, Karate and other arts of combat. Example: Girls of the Wilds.
Sports: Centers around anything related to some sort of sport, like Basketball or Baseball. Example: Slam Dunk
Shoujo Ai: Girls Love. Example: Lily Love
Yuri: Usually features more intimate relationships than Shoujo Ai. Example: Gokujou Drops
Shounen Ai: Boys Love. Example: Himitsu no Akuma-Chan
Yaoi: Usually features more intimate relationships than Shounen Ai. Example: Junjou Romantica
Comedy: Generally intended to amuse, light, humorous, funny. Example: Nisekoi
Smut: Usually contains offensive content, especially sexually profane material. Example: Nozoki Ana (Manga).
Took me quite a while to get all of the examples and write good descriptions, i had to step outside my confort zone for some(like Yaoi) to find the examples, but i hope it was worth it.
If i missed any tags tell me.