How does a poem’s subject differ from its theme? ?

The theme is generally what the poet means to convey. This is usually a universal truth, or something similar. The poem's subject is literally just what the poem is describing or making commentary about. Poets often use symbolism in their poems to convey the theme. The subject is often simple - it is what the poet is discussing in their poem. The theme is often their attitude towards said subject.

Sorry, what passage, i don’t see one? i can you in pm’s if you’d like.