Interesting, I wasn't aware of that :) and Cork, Ireland has no relation with corktrees (Not sure but I think I used to assume that when I was young) it comes from a word meaning marsh
According to the quiz results, only about 5 trees are "commonly known" (50% or above). The rest should be removed or the quiz qualifier of "commonly known" should be changed.
In addition to sweet gum (Liquidambar styraciflua) there's also the black gum, aka tupelo (Nyssa sylvatica), and the water gum (Nyssa aquatica), all native to the eastern US. There's an unrelated tree, also called water gum, that's native to Australia.
A gum tree in Australia is a Eucalypt, and there are hundreds of different species including the worlds tallest flowering plant, Eucalyptus regnans (known as the mountain Ash) which are still growing at over 300ft in Tasmania the tallest of which is 327ft and growing. The tallest tree ever measured was not a Sequoia sempervirens, but a type of eucalypt (Eucalyptus), an Australian hardwood tree. In 1872 forester William Ferguson spotted an extremely tall mountain ash (Eucalyptus regnans) near the Watts River, Victoria, Australia. Purportedly it was 132.6 m (435 feet) tall. Around that time, multiple specimens of 140 m (459ft.) tall were reported in Victoria, mainland Australia.
If you look at a picture of a palm tree stump, they lack the characteristic rings that trees have. In the end, it's all up to you how you define what a tree, because a lot of people have different definitions
Ipé or occasionally epay is a jungle wood from a tree of the same name used in decking and marine applications, like teak, jujube (not jojobo) and mahogany. It commonly has thin grains of oily yellow through its darker brown, which cause skin rashes and lung irritation when cut and the dust goes in the air.
10/13 missed gum, palm and teak :) pretty proud since English is not my native language and this isnt really stuff that comes up in books and movies. (Usually... I am aware of the movie with elm in the title (perhaps the only reason I know it) and oak trees I feel do quite regular make an appearance in literature.
And yes, all trees are plants, but not all plants are necessarily trees.