proboscis vs trunk

proboscis and trunk both are nouns.

Word	Noun	Adjective	Verb	Adverb
proboscis	Yes	No	No	No
trunk	Yes	No	No	No

As nouns, proboscis and trunk are synonyms defined as:

proboscis (noun)	trunk (noun)
a long flexible snout as of an elephant	a long flexible snout as of an elephant
the human nose (especially when it is large)	luggage consisting of a large strong case used when traveling or for storage
	compartment in an automobile that carries luggage or shopping or tools
	the body excluding the head and neck and limbs
	the main stem of a tree; usually covered with bark; the bole is usually the part that is commercially useful for lumber