Sadness, sadness, etc. are interpreted as words with the same meaning in different orders.

Some words are made up of two words with similar meanings. If you read them backwards, the meaning is still the same. Such as: talk-talk, perception-perception, snuggling-snuggling, liking-joy, relaxing-slowing down, accumulation-accumulation, mutual-mutual, substitution-substitution, inquiry-inquiry, swallowing-swallowing, suffering-suffering, neatness-neatness.

After the words associated with some contents are reversed, their meanings are still similar or related, such as: accumulation-accumulation, midnight-midnight, boldness-boldness, qualitative change-deterioration, openness-liberalization, fireworks-flame, youth-snow-snow, well water, infatuation-infatuation, infatuation.

But there are still many words that are composed of two words with similar meanings, such as: production-generation, reality-realization, honesty-solar terms, calculation-calculation, face-face, official-eunuch, will-will, play-volatilization; Some words that are not synonyms can't be reversed casually, such as names-celebrities, getting on the horse-immediately, being in charge-possessing, flirting-emotional appeal, turmoil-walking, getting-getting, human feelings-lovers, rural areas-going to the countryside, stories-accidents, leaders-matchmaking, and Shanghai.

Another interesting phenomenon is that the names of some things, if reversed, just show the purpose of these things, such as: sheepfold-sheepfold, bedding-bedding, hammer-hammer iron, door lock-lock, lid-lid, cork, toothbrush-brushing, bedspread.