lano

One root, four letters, no seams. Lan- is a single borrowed root and nothing comes off either end of it. That is worth saying plainly on a page like this, because by rank 2,500 a learner has been trained to look for affixes everywhere and will happily find one that is not there. There is no la plus -n hiding in lano, and the language does not have an -o suffix to strip - the -o is simply the noun ending every noun carries.

What it builds instead. Lana is woollen, so lana ĉemizo is a woollen shirt and the el lano construction in the examples above is the alternative way of saying it. Lanaĵo is a woollen article, senlana is fleeceless, and kotonlano is cotton wool. The one to watch is lanugo, down or fluff, which looks like lano plus something and is in fact its own Latin borrowing from lanugo, the soft first growth.

The material fence. Ŝtofo is cloth, the woven result; lano is the fibre that goes into it, alongside kotono (cotton) and silko (silk). You get wool off a ŝafo with tondi, to shear, which is the same verb used for cutting hair and clipping a hedge.