The phrase 'good' in Spanish can be tricky, as it has multiple meanings depending on the context. In formal situations or when expressing approval, you can say "bueno" (BOO-eh-noh), which is similar to saying "good" in English. However, if you want to express that something is excellent or of high quality, you would use the phrase "muy bueno" (MOO-ee BOO-eh-noh). In informal settings, especially when speaking with friends, it's common to say "estupendo" (es-too-PEN-doh), which translates to "great" or "excellent". When saying goodbye, you can use the phrase "chau" (CHOW) in some Latin American countries, but in more formal situations, it's best to stick with "adiós" (ah-DEE-yos). In many European cultures, including Spain and Portugal, you would say "adeus" (ah-DEH-soos), while in France, the phrase is "au revoir" (oh reh-VWAHR). When parting ways from someone in Germany or Austria, it's common to use the phrase "auf Wiedersehen" (OW-fee-DA-gen), which translates to "see you again." In Japan, when saying goodbye, people often use the phrase "sayonara" (sah-yoh-NAH-rah), which is more formal than "goodbye," while in China, you would say "zài jiàn" (ZAI jee-en) or "xiè xiè" (SHAY SHAY), depending on the region and level of formality.