<span>She is a righteous and stubborn woman who believes in securing what is due to her.</span>
Answer:
Christian ideas are definitely not fully integrated into the epic because this poem is primarily and epic, heroic poem at a time where most people were still pagan. If you reread lines 85-103, you will see that Hrothgar's followers do pray for protection from Grendel, but in the latter part of the poem it is mentioned that they prayed to their pagan gods as well.
E.g.
<em>At the shrines of their idols often they promised</em>
<em>Gifts and offerings</em>
In Christianity, God isn't referred to as idol - as a matter of fact, the Bible itself says that no being should be idolized. Therefore, there are definitely some instances of Christian ideas in this poem, but ultimately, it is predominantly a pagan religion written in Beowulf.
I don't know if this is specifically what you mean, but if they have the same origin, they would be
cognates.
For example, Spanish and Portuguese words for home, which are both written "casa" but pronounced slightly differently, are cognates!
Or they could be loan words, if we know that the word in one language speficically "came" from another language.
Answer:
You must go to the doctor.
Hope you find it useful