Kawaii: (
↗kawaii (
可愛い) = "cute" or "adorable") If you've watched anime in Japanese, you've heard characters use the term 'kawaii'. So if the title makes you want to say that (often using
↗chibi characters, i. e. small and super-deformed), then it fits.
Ecchi: (
Objectionable Content) (
↗ecchi (
エッチ) = "indecent", "lewd", "sexy", "lascivious", or "naughty") These are non-pornographic anime titles which have a high amount of fanservice, nudity, or other sexual content. See also:
↗Wikipedia:Ecchi.
Fan Service: (
Objectionable Content) This is a term coined to identify things like jiggling breasts, cleavage shots, panty shots, bra shots, closeup shots of women's breast, legs, butt, etc., and mild nudity all for the purposes of "servicing" the audience. The term has a second meaning covering things like massive action sequences, explosions, fights, etc., but it mostly refers to the first meaning.