1.
together with, along with
Indicates doing something together with someone or something. More formal than 一緒に.
2.
both, as well as
Indicates that something applies to both parties or items mentioned.
3.
as, at the same time as
Used in the pattern 〜と共に to mean 'as ~ happens' or 'along with ~'.
Related Words
Related:
一緒に (together (casual))