train dispatcher vs yardmaster

train dispatcher and yardmaster both are nouns.

Word	Noun	Adjective	Verb	Adverb
train dispatcher	Yes	No	No	No
yardmaster	Yes	No	No	No

As nouns, train dispatcher and yardmaster are synonyms defined as:

train dispatcher and yardmaster: a railroad employer who is in charge of a railway yard

Other synonyms of train dispatcher include trainmaster.

train dispatcher (noun)	yardmaster (noun)
a railroad employer who is in charge of a railway yard	a railroad employer who is in charge of a railway yard