Try the Japanese article for fun!

After coming across 応援「おうえん」in my Wanikani lessons, I decided to look off into this word since it reminded me of the title of this rhythm Elite-Beat-style game --> 押忍！闘え！応援団 「おす！たたかえ！おうえんだん」

An ōendan (応援団^?), literally "cheering squad" or "cheering section",^[1] is a Japanese sports rallying team similar in purpose to a cheerleading squad in the United States,^[2] but relies more on making a lot of noise with taiko drums, blowing horns and other items, waving flags and banners, and yelling through plastic megaphones^[3][4] in support of their sports team than on acrobatic moves (though some ōendan incorporate pom-pom girls). In addition to cheering for their own teams, ōendan have been known to lead fans in cheers which tease and taunt the other team and its fans.^[4] This is usually done in the spirit of good competition, but occasional fights have broken out if the taunting gets too heated. Smaller ōendan are sometimes calledōenbu (応援部^?) (or "cheering clubs").

Meaning "reccommendation" and with する, "to reccommend." Learned this gem of a word from Japanese friend.