Install offline Dictionary in Ubuntu/Linux Mint

Dictionary is one of brilliant things that man(may be woman) ever created. Someday in the past may be this thing is the only thick thing(book) that everyone from young to old ever wanted to hold. But today, is not the era of people judging something by the cover or by the thickness, let me remind you, hello there people out there, that this day is the paperless era, where people worship the trees more than a book in the old time... These below two dictionaries are the stuffs that I installed on my xUbuntu 12.10, and work perfectly great.....