technique vs proficiency

technique and proficiency both are nouns.

Word	Noun	Adjective	Verb	Adverb
technique	Yes	No	No	No
proficiency	Yes	No	No	No

As nouns, technique and proficiency are synonyms defined as:

technique and proficiency: skillfulness in the command of fundamentals deriving from practice and familiarity

technique (noun)	proficiency (noun)
a practical method or art applied to some particular task	the quality of having great facility and competence
skillfulness in the command of fundamentals deriving from practice and familiarity	skillfulness in the command of fundamentals deriving from practice and familiarity