1. Product, Literature, Law
1.1. Food Safety
1.2. Drug Safety
1.3. Industrial Product Safety
1.4. Vehicle Safety
2. Practice, Social Interaction
2.1. Meeting & Greeting
2.1.1. A handshake is appropriate upon meeting
2.1.2. Some Japanese bow and shake hands
2.1.2.1. To show respect
3. Gesture & Body Language
3.1. The thumb and index finger form a circle, while the other three fingers form a straight line
3.1.1. American, Maltese, Italian, Tunisian, Turkish, Filipino : OK
3.1.2. Brazil, Bellarussia, Guatemala : Something vulgar; related to the sexual organs
3.1.3. Japan : Money
3.2. Point to the Nose
3.3. The Finger Cross
3.4. The Big Arm Cross
3.5. The Walking Hand Chop
4. Language
4.1. Japanese (Nihongo)
4.1.1. Hyoujungo (standard speech)
4.1.2. Kyoutsugo (general speech)
5. Unique Culture
5.1. Bowing
5.1.1. A friend get a lightning-fast 30-degree bow
5.1.2. An office superiorget a slow, extended, 70-degree bow
5.2. Table Manners
5.2.1. Dinner party and receive drinks
5.2.2. Receive a small wet cloth at most Japanese restaurants
5.2.3. Slurping noodles or making loud noises while eating is OK!
5.2.4. Raise bowls to your mouth to make it easier to eat with chopsticks
5.2.5. Say “itadakimasu” (I will receive)
5.3. No Tipping
6. Related to Language
6.1. Main Language
6.1.1. Standard Japanese (Nihongo)
6.1.1.1. Spoken by the majority of the population
6.1.2. Ryukyuan Language
6.1.2.1. Spoken mainly in the Ryukyuan Islands
6.1.3. Okinawa Language
6.1.3.1. Spoken mostly in the Okinawa Islands
6.1.4. Ainu Language
6.1.4.1. Only spoken by a few people
6.2. Letters
6.2.1. Kanji
6.2.1.1. Starting from the image of the object
6.2.2. Hiragana
6.2.2.1. To write common Japanese sentences
6.2.3. Katakana
6.2.3.1. To write loanwords from other languages, names of non-Japanese people and places, sounds, and animal sounds