across means on the opposite side or in front of. beyond means on the opposit side but not exactly in front of something. It can also be far away from the point of reference.

It is not understood what is meant by 'trunk' in a car. For the word 'bumper', the general meaning of the word is given and not the one related to the topic, 'Car Vocabulary - names of the parts of the car'. Detailed meanings for the following words are not given - Bumper, Trunk, Tail pipe, whereas the same word is written in devnagari. Same thing can be seen in the dictionery too.

Thank You Sir for the information. Perhaps such beds are used in children's hostel and in the asylums for the homeless children.