hand one-parent family package holiday Parent-Teacher Association parking meter pen-friend personal computer polar bear police station post office rolling pin sister-in-law sleeping bag swimming pool T-shirt tea bag telephone number traveller’s cheque washing machine X-ray youth hostel zebra crossing 1.86 Here is a list of some common uncountable compound nouns: air conditioning air-traffic control barbed wire birth control blood pressure bubble bath capital punishment central heating chewing gum common sense cotton wool data processing do-it-yourself dry-cleaning family planning fancy dress fast food first aid food poisoning further education general knowledge hay fever heart failure higher education hire purchase income tax junk food law and order lost property mail order mineral water nail varnish natural history old age pocket money remote control science fiction show business show jumping sign language social security social work soda water stainless steel table tennis talcum powder toilet paper tracing paper unemployment benefit value added tax washing powder washing-up liquid water-skiing writing paper 1.87 Here is a list of some common singular compound nouns: age of consent arms race brain drain continental divide cost of living death penalty diplomatic corps dress circle fire brigade general public generation gap greenhouse effect hard core human race labour force labour market long jump mother tongue open air private sector public sector rank and file solar system sound barrier space age welfare state women’s movement 1.88 Here is a list of some common plural compound nouns: armed forces baked beans civil rights current affairs French fries grass roots high heels human rights industrial relations inverted commas licensing laws luxury goods modern languages natural resources race relations road works social services social studies swimming trunks vocal cords winter sports yellow pages composition of compound nouns 1.89 Most compound nouns consist of two nouns, or an adjective and a noun. I listened with anticipation to the radio news bulletin . …a big dining room . Old age is a time for reflection and slowing down. However, some compound nouns are related to phrasal verbs . These are sometimes written with a hyphen, and sometimes as one word. They are rarely written as separate words. The President was directly involved in the Watergate cover-up . I think there’s been a mix-up . …a breakdown of diplomatic relations. The singer is making a comeback . Here is a list of frequent nouns based on phrasal verbs. They are shown in this list in the form in which they are most frequently written, either with a hyphen or as one word. backup bailout blackout breakaway breakdown break-in breakout break-up build-up buyout check-in checkout check-up comeback countdown cover-up crackdown cutbacks drawback feedback follow-up giveaway handout kick-off lead-up lookout make-up meltdown mix-up passer-by run-in runner-up run-off run-up sell-out setback set-up show-off slowdown takeaway take-off turnover warm-up For more information about phrasal verbs, see paragraphs 3.83 to 3.116 . USAGE NOTE 1.90 In some cases, the meaning of a compound noun is not obvious from the words it consists of. For example, someone’s mother tongue is not the tongue of their mother but the language they learn as a child, and an old hand is not a hand that is old but a person who is experienced at doing a particular job. In other cases, the compound noun consists of words that do not occur on their own, for example hanky-panky , hodge-podge , and argy-bargy . These nouns are usually used in informal conversation rather than formal writing. Most of what he said was a load of hocus-pocus . She is usually involved in some sort of jiggery-pokery . plural forms 1.91 The plural forms of compound nouns vary according to the type of words that they consist of. If the final word of a