Fear - An unpleasant emotion caused by the belief that someone or something is dangerous, likely to cause pain, or a threat.
Phobia - An extreme or irrational fear of or aversion to something: "he had a phobia about being under water"; "a phobia of germs".
2) Give Examples of Phobias
A
Ailurophobia- Fear of cats.
Albuminurophobia- Fear of kidney disease.
Alektorophobia- Fear of chickens.
Algophobia- Fear of pain.
Alliumphobia- Fear of garlic.
B
Bibliophobia- Fear of books.
Blennophobia- Fear of slime.
Bogyphobia- Fear of bogeys or the bogeyman.
Botanophobia- Fear of plants.
Bromidrosiphobia or Bromidrophobia- Fear of body smells.
C
Catagelophobia- Fear of being ridiculed.
Catapedaphobia- Fear of jumping from high and low places.
Cathisophobia- Fear of sitting.
Catoptrophobia- Fear of mirrors.
Cenophobia or Centophobia- Fear of new things or ideas.
D
Didaskaleinophobia- Fear of going to school.
Dikephobia- Fear of justice.
Dinophobia- Fear of dizziness or whirlpools.
Diplophobia- Fear of double vision.
Dipsophobia- Fear of drinking.
E
Epistaxiophobia- Fear of nosebleeds.
Epistemophobia- Fear of knowledge.
Equinophobia- Fear of horses.
Eremophobia- Fear of being oneself or of lonliness.
Ereuthrophobia- Fear of blushing.
F
Febriphobia or Fibriphobia or Fibriophobia- Fear of fever.
Felinophobia- Fear of cats. (Ailurophobia, Elurophobia, Galeophobia, Gatophobia)
Francophobia- Fear of France or French culture. (Gallophobia, Galiophobia)
Frigophobia- Fear of cold or cold things.(Cheimaphobia, Cheimatophobia, Psychrophobia)
G
Geliophobia- Fear of laughter.
Gelotophobia- Fear of being laughed at.
Geniophobia- Fear of chins.
Genophobia- Fear of sex.
Genuphobia- Fear of knees.
H
Hodophobia- Fear of road travel.
Hormephobia- Fear of shock.
Homichlophobia- Fear of fog.
Homilophobia- Fear of sermons.
Hominophobia- Fear of men.
I
Illyngophobia- Fear of vertigo or feeling dizzy when looking down.