Well there are actually a few different scenes that poisons are used or shown.
onomatopoeia
Juliet starts out speaking in what she thinks is a soliloquy except that unknown to her Romeo is listening in. This enables Romeo to find out why Juliet really thinks about him without the usual doubletalk.
act 3 scene 2 line 45
Safe and sound by taylor swift
It is Juliet's soliloquy - "O Romeo, Romeo! Wherefore art thou Romeo?" It keeps Romeo there and lets him know that she loves him too.
"Hatred" (used in Act II Scene 3)
Foreshadowing
The script does not specify it, but the Party Scene (Act 1 Scene 5) is usually used as an excuse to include some dancing.
This phrase is not used in Romeo and Juliet.
A hyperbole in Act 4, Scene 1 of Romeo and Juliet is when Juliet says that she would rather die than marry Paris, exaggerating her feelings to convey her desperation. She uses hyperbole to emphasize the intensity of her emotions and her refusal to comply with her parents' wishes for her marriage.
Romeo speaks to himself in the aside in "Romeo and Juliet", scene two. Asides are used so that the character can say something to the audience that the other characters are not supposed to be able to hear.
In Act 2, Scene 2 of "Romeo and Juliet," also known as the balcony scene, Juliet says the famous line, "Good Night, Good night! Parting is such sweet sorrow, that I shall say good night till it be morrow." This is a significant moment in the play where Romeo and Juliet express their love for each other.