A rabbit has long ears and a short tail.
Suffixes, 1: "-ion" creates nouns that show the meaning of 'action, state, process, results,' and so on.
In many languages the way dictionary-form words end is fixed; in Japanese they end in a 'u row' character.
'-osity' is an abstract noun word ending created from the ending of an '-ous' adjective.
You just have to understand what sort of thing the suffix '-osity' is.
I'm aware that you failed.
"A passionate kiss scene in a school corridor ... I've heard all about it!" "It wasn't passionate! That's an exaggeration..."
The caged tiger lashed its tail.
The comet leaves a trail of light behind it as it moves.
The primates include not only the apes, but also man.
I would like to draw your attention to the fact that Kanjisho uses multiple sources of data provided by third parties.
The search results are provided by the wonderful Jisho API which itself uses various data sources which you can find on the jisho's website. The data concerning the kanji strokes are provided by the KanjiVG project, under the CC BY 3.0 FR license. I also use Tatoeba to provide example sentences and Kuroshiro to obtain the furiganas and romajis versions of the sentences.
If you find any vices, errors or malfunctions, please let me know so that I can correct them.