Question

Name the figure of speech in these line.

"Her aged hand on his strong young arm."

Answer 1

Antithesis
hope it helps you!

Answer 2

The figure of speech in this line is Antithesis.  Antithesis can be defined as the figure of speech which states the juxtaposition of opposing or contrasting ideas.

This figure of speech is characterised by its nature to showcase the differences in ideas or opinions through a certain contrast in the clauses or words or sentences.

It displays the contrast of ideas within a comparable grammatical structure. In the aforementioned line ‘aged hands’ is the clause contrasting to the ‘young arm’.