Katakana Table

Follow the strokes, not the silhouette: シ (shi) is built with two small strokes on the left and a long sweep underneath - they write horizontally, left to right; ツ (tsu) stacks the same three strokes vertically, top to bottom. The near-foolproof test: find the two small strokes and ask which way the line of them runs - horizontal means shi, vertical means tsu. Font styles blur this (some typefaces tilt everything), which is exactly why the loanword script gets a reputation for unreadability that hiragana escapes.

Role assignment, not difficulty: after the two kana scripts settled, katakana became the margin script - used for annotations, official readings and anything marked as not-native. Foreign words fell into that slot naturally, and modern usage keeps the logic: loanwords (テーブル, teeburu), foreign names (ロンドン, Rondon), countries, species names, onomatopoeia and robotic shouting all wear it. The practical payoff for learners is searching - if a word is English in origin, typing it in katakana into a map or menu finder usually works, while hiragana would look like a grammar word.

The chōonpu (長音符), a lengthening bar that adds one vowel beat to whatever kana precedes it: ラーメン is raa-men (four beats), ケーキ kee-ki. It is essentially katakana-only - hiragana writes long vowels the honest way, by spelling them out with a second kana (らあめん), and kanji ignores the concept. The bar exists because loanwords carried vowel lengths Japanese script had no letters for; a line was the cheapest invention that fit the angular grid. Misreading it compresses words - ビール loses its second beat and drifts toward ビル, building.

Loanword pressure patches. The Japanese grid has no fa, fi, ti, di, vu or ye - so modern spelling glues a small vowel to an existing kana: ファ (fa) is fu plus small a, ティ (ti) is te plus small i, ヴィ (vi) uses the rare voiced-u ヴ. Purists resist (official style often rewrites them as フua or fu for foreign bodies), but menus, brands and names use them daily. The list keeps growing - フェ fye, ウィ wi - which is why katakana charts in textbooks lag behind real signage.

The small ッ doubles the consonant that follows it, adding one silent beat before it arrives: サッカー is sak-kaa (four beats), きって is kit-te. The full-size つ is an ordinary letter with its own tsu sound, so size is meaning - the same trick hiragana writes with small っ (きって again). In loanwords the ッ usually marks where the foreign word had a double consonant (ベッド, beddo, from bed), and getting it wrong changes words: おばさん (obasan, aunt) versus おばあさん (obaasan, grandmother) differ only in beats.