s4e no
No, the word backpack is not an adverb at all.The word backpack is a noun ("pass me my backpack please") and a verb ("we will backpack across the valley").
yes
A metaphor for the word stength is tower of strength.
a backpack is called 'un sac à dos' in French.
Mochila.
yes
Metaphor is a noun.
I say the word ''metaphor.''
He used a metaphor to desciribe the swaying trees.
La Mochila
The compound word "pancake" has a short "a" sound.