also: おんなじ · おんなし
noun-modifying (irregular), na-adjective
Used to indicate that two or more things are not different. Functions as a prenominal adjective (同じ本) or as a na-adjective in predicate position (同じだ).
He goes to the same school as me.
These two boxes are the same size.
anyway; if one must; as long as
Used in the pattern 同じ…なら to mean 'if it's the same (effort/circumstance), then...' or 'as long as one is doing it anyway'. Often implies making the best of a situation.
If we're going anyway, it's better to go early.
If I'm going to buy it anyway, I want to choose something of good quality.
I bought the same book as him.
If I'm going to buy it anyway, I want to buy a good quality one.
I live in the same town as her.
同一 is a formal, often legal or technical word meaning 'one and the same', while 同じ is the plain everyday equivalent.
同じ is the general word for 'the same', while 一緒 often adds the sense of being together or grouped as one.
同じ is the ordinary adjective-like word for 'same' used in everyday speech and writing, while 同 is a bound prefix (read どう) attached to formal nouns like 同社 or 同日.
同じ is a general adjective meaning 'the same', whereas 同数 is a noun that specifically expresses numerical equality.
同じ states that two things are factually the same, whereas 同然 stresses that something is virtually or practically equivalent, often subjectively.
同じ is the everyday word for 'the same', while イコール specifically frames two things as equivalent in value or effect, often in comparative statements.
一緒 means 'together (with someone)' or 'doing something jointly', while 同じ means the things themselves are identical, so learners often mix up 同じ本 (an identical book) with 一緒に本を読む (reading a book together).
同じ is the plain adjective meaning 'same' that modifies nouns, while 同じく is the adverb/conjunction form meaning 'likewise', used to link clauses or introduce a following statement.
Colloquial pronunciation variant; common in casual speech.
Search-only kana form; not a standard spelling.