rudderstock vs rudderpost

rudderstock and rudderpost both are nouns.

Word	Noun	Adjective	Verb	Adverb
rudderstock	Yes	No	No	No
rudderpost	Yes	No	No	No

As nouns, rudderstock and rudderpost are synonyms defined as:

rudderstock and rudderpost: a vertical post at the forward edge of a rudder that enables the rudder to pivot

rudderstock (noun)	rudderpost (noun)
a vertical post at the forward edge of a rudder that enables the rudder to pivot	a vertical post at the forward edge of a rudder that enables the rudder to pivot