1. Allusion Allegory Symbolism

2. Allusion Mythological Allusion
“Induced by these feelings, I was of course led to admire peaceable lawgivers, Numa, Solon, and Lycurgus, in preference to Romulus and Theseus.”
The allusion to the mythological characters Romulus (Roman) and Theseus (Greek) leads the reader to understand why he thought Numa, Solon and Lycurgus were more peaceful.

3. Allusion Religious Allusion
“Remember that I am thy creature; I ought to be thy Adam; but I am rather the fallen angel ”
The comparison of the monster to Adam and the fallen angel lets the reader know the monster’s self-perception.

4. Allusion
A reference to a mythological, literary, historical or religious person place or thing.
Historical
“I heard of the slothful Asiatics; of the stupendous genius and mental activity of the Grecians; of the early Romans – of their subsequent degenerating – of the decline of that mighty empire Frankenstein
The allusion to the Asiatics, Grecians, and Romans refers to their ultimate decline, just as the monster thinks the society of his time is declining.

5. Symbolism
The use of any object, person, place, or action that both has a meaning in itself and one that stands for something larger than itself, such as quality, attitude, belief, or value.
Universal symbolism is common to all mankind (red symbolizes love, blood, etc.)
Contextual symbolism is used in a particular way by an individual author.

6. ALLEGORY
A work with two levels of meaning—a literal one and a symbolic one.
The purpose of an allegory may be to convey truths aut life, to teach religious or moral lessons, or to criticize social institutions.

7. The Tortoise and the Hare
The Hare was once boasting of his speed: "I have never been beaten," said he, "when I go full speed. I challenge any one here to race with me."
The Tortoise said quietly, "I accept your challenge.“
"That is a good joke," said the Hare; "I could dance round you all the way.“
"Keep your boasting till you've won," answered the Tortoise. "Shall we race?"
So a course was fixed and the race started. The Hare darted almost out of sight at once, but soon stopped and, to show his contempt for the Tortoise, lay down to have a nap.
The Tortoise plodded on and plodded on, and when the Hare awoke from his nap, he saw the Tortoise just near the finish line and could not run up in time to save the race.
MORAL: Slow and steady wins the race.