Competition from another railway (7)

I believe the answer is:

rivalry

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'competition' is the definition.
(synonyms)

'another railway' is the wordplay.
'another' becomes 'rival' (I am not sure about this - if you are sure you should believe this answer much more).
'railway' becomes 'ry' (abbreviation).
'rival'+'ry'='RIVALRY'

'from' acts as a link.

Can you help me to learn more?

(Other definitions for rivalry that I've seen before include "Vendetta" , "Competition" .)

I've seen this clue in the Evening Standard.

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