summer holiday vs summer vacation

Some examples from the web:

• Our aim is to present a revised proposal after the summer holiday.
• I left, Minna and the kids woke up, it was summer holiday.
• You know, I'm starting to think we slightly wasted that summer holiday.
• On the other hand, a summer holiday in the country of origin can turn into a nightmare for migrant girls, when family members deem it necessary to uphold their tradition.
• Young people should have a special programme from 14.30 to 17.00 during term time, as well as during the summer holiday.
• Mr President, Commissioner, in a few months' time, hundreds of thousands of holidaymakers will again head for the Adriatic Coast to spend their summer holiday.
• It was the last day of term today, I'm a teacher, I get a stupidly long summer holiday,
• Have you told Miss Brawne of our summer holiday, or shall I?
• He is awaiting the decision of the Brazilian Supreme Court and the Supreme Court is currently not in session during the southern hemisphere's summer holiday.
• Can the Commission provide, before the forthcoming summer holiday period, a clear and comprehensive survey of current roaming charges?
• Taking that away is like taking away the sunshine from a Summer holiday.
• He is reported as: 'enjoying his summer holiday, sailing on a yacht'.
• As the summer holiday season approaches, people are spending more and more time outdoors, and there is a risk of direct contact with the volcanic ash.
• The timetable may be adjusted during the summer holiday period and at Christmas and other holiday periods according to demand.
• Not just a summer holiday or visit...
• You indicated that this might be ready by August, which misses this year's summer holiday period.
• That was supposed to be my summer holiday.
• It's summer holiday, and foreigners are out for it.
• Not when they hear where she spent her summer holiday last year.
• I hope that before the summer holiday I will be able to submit a formal motion to make their agreement binding.

Some examples from the web:

• The judge was mad at me for ruining his summer vacation.
• It's not long before summer vacation.
• Time flies, it'll soon be summer vacation
• Ninety-three days till summer vacation, man.
• Your summer vacation starts tomorrow, so take care of yourselves and practice moderation.
• My car against your summer vacation, spent working for me.
• It was my second grade summer vacation.
• Mr. Panetta just nixed my summer vacation.
• Susan spent the summer vacation at her grandmother's.
• I usually went to bed at ten during the summer vacation.
• I'm just going to rest during the summer vacation.
• Anyway, he's ruined my summer vacation!
• Mr Snell, since these are the last few moments before the summer vacation, I would appreciate it if you could remain awake until the final bell.
• In my 8th grade summer vacation, I went to pick up my pens and Kent paper from the store by our school.
• The son of a beloved woman was brought over to me for custody the last days of summer vacation.
• Which means you'd also miss out on a real summer vacation.
• It would please my parents and myself very much, if you... would like to spend your summer vacation here at the vicarage.
• Mr President, I would like to recall the very good atmosphere of our negotiations which we began in the spring, finalising them before the summer vacation.
• I'm thinking of going to the States during the summer vacation.
• You still want to know about your summer vacation?