Final answer:
In the given literary context, 'wood' likely symbolizes humanity, life and growth possibility, while 'stone' symbolizes the physical world, permanence and unchanging aspects of life.
Step-by-step explanation:
In literary analysis, particularly in poetry, the use of symbols like 'wood' and 'stone' is common to represent abstract ideas. Given the context of Line 48 which refers to singing 'to Christ', it's reasonable to infer that in this case 'wood' and 'stone' symbolize humanity and the physical world, respectively.
Typically, wood is a symbol for humanity, life or potential for growth, reminiscent of trees growing in nature. On the other hand, stone often symbolizes the physical world, permanence, stability, or perhaps the inanimate and unchanging aspects of life.
Learn more about Symbolism in Literature