I was also taught the same thing in school around 40 years ago Most of the she style labels i hear are half terms of endearment and half self mockery +1 it seems that vacuum is the odd word out when placed in a lineup with (for example) continuum, individuum, menstruum, and residuum
What's the difference between at hand, on hand and in hand
At hand seems to me as if you have something in reach
On hand is if you have something in stock And in hand can be used as if you have. Considering their primary meanings, vacuum is used more often in a scientific context, in which case it means space completely or partially absent of any matter/air Is it necessary to put an article before the word "vacuum"
If a 'vacuum cleaner cleaner' is a machine for cleaning vacuum cleaners, then the person who cleans the vacuum cleaner cleaner would be a 'vacuum cleaner cleaner cleaner'. In other words, don't talk about how the vacuum cleaner was made in germany and incorporates the latest technology Tell the client he'll be able to vacuum the house in half the time and he'll never have to buy a replacement bag.
