Answer: Depth
Answer: Gamophobia
Explanation: "gamos" is the greek word for "marriage" while "gyne" is for "women". So, someone who is afraid of marriage has "gamos + phobia" i.e. "gamophobia" while someone who is afraid of "women" has got "gynaephobia". Synophobia is just the fear of "togetherness".
Answer: Fire
Answer: Nyctophobia
Explanation: The fear of any "change" or anything "new"is "Neophobia". "Photo" refers to "light", so the fear of light is "Photophobia" while the fear of "darkness" refers to "Nyctophobia".
When the fear of light is specifically from "sunlight" it is called "heliophobia"
"Astrophobia" is the fear of "lightning" that happens during rains.
Answer: Dogs
Explanation: The fear of cats is called "Ailurophobia" while the fear of "dogs" is "Cynophobia".
And yes, there are some people who are scared of frogs and fish as well. They are called to possess "Batrachophobia" and "Ichthyophobia" respectively.
And, we also know that some people are dead scared of snakes, they are said ot have "ophidiophobia"
Answer: Pathophobia
Explanation: When someone is scared of "medicines", they suffer from "Pharmacophobia" while if they are scared of "doctors", it is "Iatrophobia".
The fear of diseases is "Pathophobia" and that of "poisons" is "Toxicophobia".