As nouns the difference between trains and metro
is that trains is plural of lang=en while metro is an underground railway.
As a verb trains
is third-person singular of train.
As an adjective metro is
metropolitan.
trains
English
Noun
(head)
Verb
(head)
(train)
Anagrams
*
----
metro
English
Etymology 1
(etyl) .
Noun
(
en noun)
An underground railway.
A train that runs on such an underground railway.
An urban rapid transit light railway
A train that runs on such a railway.
Synonyms
* (underground railway) el/El (US), subway (US), Tube (the London underground), underground (UK), underground railway (UK)
Etymology 2
Noun
(
en noun)
A metropolitan area.