as one
● Simultaneously
● Mutually
● Together
● Accordingly
● Agreeably
● Alike
● Combined
● En masse
● Hand in glove
● Hand in hand
● Inextricably
● Intimately
● Side by side
● Similarly
● Concurrently
● Cooperatively
● Collectively
● Unitedly
● Conjointly
● Arm in arm
● Coincidentally
● Companionably
● Concomitantly
● Connectedly
● Harmoniously
● In a group
● In common
● In company with
● In concert
● In conjunction
● In league
● In partnership
● In unison
● Inseparably
● Reciprocally
● With one another
● Singly
● Synchronically
● Diachronically
● Either
● Historically
● Viewed
● Studied
● Read
● Related
● Considered
● Speaking
● Derived
● Treated
● Analyzed
● Oriented
● Occur
● Analysed
● Attested
● Interpreted
● Motivated
● Observed
● Regarded
● Exists
● Exist
● De saussure
● Diachronic
● Ferdinand de saussure
● Saussure
● Structural linguistics