Transparent means that you can see through it. if you take a clear glass plate and put it to your face, you can still see yourself. Transparency is the physical property of allowing light to pass through a material, translucency only allows light to pass through diffusely. The opposite property of light is opacity. Transparent materials appear clear, with generally the overall appearance of one color, or any combination leading up to a brilliant spectrum of every color. Example of transparent objects are air, and glass.
Opaque is baiscally resistant to the transmission of certain kinds of radiation, usually light. Metals and many minerals are opaque to light, while being transparent to radio waves and neutrinos. Opaque objects are things you cannot see through. In Optics you might expect that an opaque material will always hinder the transmission of light by absorbing or scattering any light that is shone on it. Some examples is a door, and a book.
In general term we can say a translucent object is an object that permits some light to pass through. In the world of entertainment, coloured light beams are produced by filters. These filters are translucent. Translucent objects transmit only part of the light which hits them. Included in this category are coloured filters and coated lenses. An observer looking at an object through the translucent material can see the object’s shape but not its real colour. Some examples of translucent objects are plastic wrap.