Intelligent, more intelligent, the most intelligent; tall, taller, the tallest; bad, worse, the worst; dangerous, more dangerous, the most dangerous; hot, hotter, the hottest; nice, nicer, the nicest; interesting, more interesting, the most interesting; little, less, the least; messy, messier, the messiest; expensive, more expensive, the most expensive
More это больше чего-то, например I need more time
а less это меньше чего-то, например I need less time
1 paper
2 write
3 envelope
4 stamp
5 address
6 post office
7 post