Like a starving beast, the fire consumed the forest.
There is use of figurative language here indicated by the phrase starving beast. Fire is compared to a starving beast by use of simile.
For capital letters, we can just add the ending -s, for example:
I got As in the final exam.
for lower-case letters, an apostrophe is used to avoid confusion:
In the multiple-choice exam all the correct answers happened to be a's! (as in: option a)
if it is friendly friendly then I'll go with family but I like blood and gore so yeah