being together; going together
Refers to people doing something together, often with a nuance of coordination or companionship. Commonly used with verbs like する, 行く, 買う, etc.
I went to the movies together with my friend.
We took a photo wearing matching T-shirts as a family.
noun which may take the genitive case particle 'no'
matching; coordinated
Describes items, especially clothing or accessories, that are identical or coordinated in design. Often used as お揃いの〜.
I bought matching scarves with my girlfriend.