Latent
Because he focused on the cognitive development of the human mind. He believed that what is in your subconscious was a window into what you really felt. He believed dreams had meanings and that when you have a "slip of the tongue", it's just your subconscious telling you what you really feel.
He considered them reflections of unconscious processes. He believed that if dreams were interpreted correctly, they would tell what was troubling the patient.
Erotic wishes
These two have meanings that overlap; a dream can be an obsession. In general, if you admire someones intentions you would be more likely to refer to them as a dream, and if you disapprove you would be more likely to refer to them as an obsession. Obsession has some connotation of mental illness, for example, there is a mental illness called obsessive compulsive disorder. Dreams, in comparison, carry some connotation of nobility. We dare to dream great dreams.
Sigmund Freud wrote The Interpretation of Dreams.
Dreams video could have several meanings. There are many videos about dreams and the meanings behind dreams on youtube for example. There is a also a wedding and event photography company named Video Dreams Productions.
Some people like to believe that their dreams have a meaning that is true. However, dreams are very personal and will only have meaning if you think they do. There are many dream dictionaries which can explain the symbology of the things in the dream, but they are not definitive meanings to what the dream was about.
The question refers to Freud's theory of dreams. The manifest content is the surface or visible meaning while the latent content would be the secret or hidden meaning. For example, in a dream about threading a needle, the manifest content would be sewing, perhaps reflecting the dreamer's work as a tailor. The latent content (particularly for Freud) would be a sexual urge with the thread and eye of the needle representing male and female sex organs.
Not all dreams. Some dreams are just things you imagine in your head. Some dreams have meanings. Some come from God. And some are just things you imagine in your head.
The theory of manifest and latent content of dreams originated with Freud.
Dreams are the product of the imagination of the sleeping mind and do not foretell the future.
Latent Content
Your dreams will come true but if you only believe in them.
No, dreams are just your subconscious. There is nothing mystical or supernatural about them.
The phobia related to the intense fear of dreams is known as Oneirophobia. See Web Links for a complete list of all fobias and their meanings
The question does not provide enough information for a meaningful interpretation. Dreams of beloved deceased grandparents would have very different meanings from dreams of gruesome corpses or of dead celebrities or war casualties. See the link below for more examples and discussion.
Believe in yourself and your dreams, then work hard to achieve your goals.