頭が痛いので帰ります

N5 頭が痛い atama ga itai have a headache N5 帰ります kaerimasu return

N3 頭 tou, zu, to / atama, kashira, -gashira, kaburi head, counter for large animals, tête N3 痛 tsuu / ita.i, ita.mu, ita.mashii, ita.meru pain, hurt, damage N4 帰 ki / kae.ru, kae.su, oku.ru, totsu.gu homecoming, arrive at, lead to

N4 〜ので node Indicates cause or reason in a softer way than kara, connects two clauses, often used in polite explanations N5 〜ます masu Used at the end of verbs, polite present or future form, makes the sentence more polite N5 〜が ga Marks the grammatical subject, highlights new information, can also show slight contrast in some sentences N5 〜で de Indicates where an action happens, means used, tool, cause, or material depending on context N5 〜の no Indicates possession, relation between nouns, nominal explanation, or turns a verb into a noun phrase