a historical period where social disorder is so great due to war, disease, political disorder etc. that there is little or no cultural development; Dark Ages

(construction, architecture) The large, central pillar that holds up a traditional Japanese house. / The breadwinner of a household or organization.

暗黒時代: a historical period where social disorder is so great due to war, disease, political disorder etc. that there is little or no cultural development; Dark Ages

classical antiquity

参加: participation / 酸化: oxidation, combustion / 惨禍: catastrophe, disaster / 傘下: subsidiary / 産科: obstetrics / 賛歌, 讃歌, 讚歌: song of praise, hymn, paean / 山家: mountain villa

酸化: oxidize, become oxidized / 参加: participate, join, take part

A title used after person's name (first name or surname) regardless of sex; Mr, Ms, Mrs, Miss. Also used after a job title and a company name. / (colloquial) Used after a shop name.

三角形: triangle

三月, 3月: March

三人: three people