My son is a little older, coming up 20 months but I thought I would answer as I alternate between being ever so slightly worried about him, and thinking it is ridiculous to compare. But it is so hard not to.
He knows plenty of words, and often mimics and copies what I or others say. Yesterday my mum sneezed and he said 'ha hoo' straight then repeated it endlessly, very cute! He will go through stages of saying something quite often like 'wu wu' when asked what doggies say, then he seems to forget it and pick something else up. But he also has mainstays that he holds in his mind and says every day. There are some words he repeats but others he only says in context, so he only says the names of foods when they are on a plate in front of him. If I say to him 'say apple' he looks at me as if I'm talking gibberish, if I give him an apple as a snack he says it unprompted. He can count to ten, but again only if we are putting away toys and counting them as we do for example. He knows about four animal noises.
He can do the easier shapes in a shape sorter, he gets a bit frustrated with some, he is starting to do chunky melissa and doug style puzzles. He can nest and stack cups and build bricks. He likes his ride on toys and the kind of toys that shoot balls out on a vacuum, also a little shopping till with a scanner and scales, a pig money bank. He is more interested in books though.
I sometimes worry about his physical development. In some ways it is fine, he can run, walk backwards, kick and throw a ball, climb on to the sofa, he is very good at climbing onto things he shouldn't. But, I see children I think may be younger than him at softplay doing more. There Are things I know he should be able to scramble under or up or over but he doesn't, it is maybe a confidence thing as he can climb stairs fine on his own. I need to go down big slides next to him because his body seems to get thrown backwards.
There is a child the same age at playgroup who can follow instructions like pull, push, turn and who knows her colours and animal noises well. She can also with a little help climb the ladder for the slide and get on and off certain toys my son needs a bit of help with. It's very hard not to compare isn't it? It's nice to have a spectrum to compare to sometimes.