 Address your remarks to the chair  illustrates metonymy, a figure of speech in which something is called by the name of something else associated with it.
( ( ( ( ( Address ( your remarks ) ) ( to ( the chair ) ) ) illustrates ) ( ( metonymy , ) ( ( ( a figure ) ( of speech ) ) ( ( in which ) ( something ( is ( called ( by ( ( the name ) ( of ( ( something else ) ( associated ( with it ) ) ) ) ) ) ) ) ) ) ) ) ) . )
(ROOT (SINV (VP (VBG Address) (NP (PRP$ your) (NNS remarks)) (PP (TO to) (NP (DT the) (NN chair)))) (VP (VBZ illustrates)) (NP (NP (NN metonymy)) (, ,) (NP (NP (DT a) (NN figure)) (PP (IN of) (NP (NN speech))) (SBAR (WHPP (IN in) (WHNP (WDT which))) (S (NP (NN something)) (VP (VBZ is) (VP (VBN called) (PP (IN by) (NP (NP (DT the) (NN name)) (PP (IN of) (NP (NP (NN something) (RB else)) (VP (VBN associated) (PP (IN with) (NP (PRP it)))))))))))))) (. .)))
Using one word to refer to something that is associated with it is a figure of speech.
( ( ( Using ( one word ) ) ( to ( refer ( to ( something ( that ( is ( associated ( with it ) ) ) ) ) ) ) ) ) ( ( is ( ( a figure ) ( of speech ) ) ) . ) )
(ROOT (S (S (VP (VBG Using) (NP (CD one) (NN word)) (S (VP (TO to) (VP (VB refer) (PP (TO to) (NP (NP (NN something)) (SBAR (WHNP (WDT that)) (S (VP (VBZ is) (VP (VBN associated) (PP (IN with) (NP (PRP it)))))))))))))) (VP (VBZ is) (NP (NP (DT a) (NN figure)) (PP (IN of) (NP (NN speech))))) (. .)))