From Longman Dictionary of Contemporary Englishchocolatechoco‧late /ˈtʃɒklət $ ˈtʃɑːkələt, ˈtʃɒːk-/ ●●● S2 noun 1 
[uncountable]DF a sweet brown food that you can eat as a sweet or use in cooking to give foods such as cakes a special sweet taste a chocolate bar a chocolate cake a packet of chocolate biscuits I prefer milk chocolate to dark chocolate.2 [countable]DFF a small sweet that is covered with chocolate Would you like a chocolate? a box of chocolates3 [countable, uncountable]DFD a hot sweet drink made with milk and chocolate, or a cup of this drink a mug of hot chocolate Two coffees and one chocolate, please.4 [uncountable] a dark brown colourCOLLOCATIONStypes of chocolatemilk chocolate (=chocolate with milk added to it)ice-cream inside a milk chocolate coatingdark chocolate (also plain chocolate British English) (=without milk and with very little sugar)strawberries dipped in dark chocolatewhite chocolate (=white in colour, with a sweet milky taste)Serve the cake with a white chocolate sauce.bitter chocolate (=dark chocolate with a strong sharp taste)Bitter chocolate may be added to meat sauces for extra flavour.cooking chocolate (=chocolate to use in cooking)Melt the cooking chocolate and spread it over the tray.melted chocolateStir in the eggs and the melted chocolate.phrasesa bar of chocolate (=a long block of chocolate)He bought a Coke and a bar of chocolate.a piece/bit of chocolateWould you like a piece of chocolate?a box of chocolates (=a box of small sweets covered with chocolate)I gave Mum a box of chocolates for her birthday.a slab of chocolate (=a large flat piece)They shared a large slab of chocolate.a square of chocolate (=a small square piece)I only ate one small square of chocolate.chocolate + NOUNa chocolate cake/biscuit/pudding etcFor her birthday he made a chocolate cake.chocolate chips (=very small pieces of chocolate)vanilla ice cream with chocolate chipsa chocolate factoryMy dream job would be working in a chocolate factory.
[uncountable]DF a sweet brown food that you can eat as a sweet or use in cooking to give foods such as cakes a special sweet taste a chocolate bar a chocolate cake a packet of chocolate biscuits I prefer milk chocolate to dark chocolate.2 [countable]DFF a small sweet that is covered with chocolate Would you like a chocolate? a box of chocolates3 [countable, uncountable]DFD a hot sweet drink made with milk and chocolate, or a cup of this drink a mug of hot chocolate Two coffees and one chocolate, please.4 [uncountable] a dark brown colourCOLLOCATIONStypes of chocolatemilk chocolate (=chocolate with milk added to it)ice-cream inside a milk chocolate coatingdark chocolate (also plain chocolate British English) (=without milk and with very little sugar)strawberries dipped in dark chocolatewhite chocolate (=white in colour, with a sweet milky taste)Serve the cake with a white chocolate sauce.bitter chocolate (=dark chocolate with a strong sharp taste)Bitter chocolate may be added to meat sauces for extra flavour.cooking chocolate (=chocolate to use in cooking)Melt the cooking chocolate and spread it over the tray.melted chocolateStir in the eggs and the melted chocolate.phrasesa bar of chocolate (=a long block of chocolate)He bought a Coke and a bar of chocolate.a piece/bit of chocolateWould you like a piece of chocolate?a box of chocolates (=a box of small sweets covered with chocolate)I gave Mum a box of chocolates for her birthday.a slab of chocolate (=a large flat piece)They shared a large slab of chocolate.a square of chocolate (=a small square piece)I only ate one small square of chocolate.chocolate + NOUNa chocolate cake/biscuit/pudding etcFor her birthday he made a chocolate cake.chocolate chips (=very small pieces of chocolate)vanilla ice cream with chocolate chipsa chocolate factoryMy dream job would be working in a chocolate factory. Examples from the Corpus
chocolate• chocolate ice cream• Who needs more pasta when you can have chocolate and spun sugar?• Britain has the highest chocolate consumption in the world, far more than any other country.• Or buying boxes of chocolates that taste like cream-filled cardboard.• She simply looks satisfied, as if she had just bitten into the most delicious slab of chocolate she ever tasted.• With chocolates and cigarettes and food and flowers.hot chocolate• The church-run concession was open, selling coffee and hot chocolate.• He always drank tea in the morning, and she, suffering from an ulcer, always drank hot chocolate.• We rode into the Place St Michel and sat in a café drinking hot chocolate.• If only I hadn't had that last cup of hot chocolate.• In the evening, the Lanes offer warm conversation along with cool drinks, coffee, tea or hot chocolate.• Books serves coffee and the tastiest hot chocolate in town.• Phoebe made all three of them hot chocolate.• Mostly it was hot chocolate she made, warming the milk in a saucepan on the stove before mixing it.Origin chocolate (1600-1700) Spanish Nahuatl xocoatl 