I was marked wrong for using "shirts," which would be the grammatically correct way to say this in English. "Shirt and pants are clothes" is not a valid English sentence.
Those is אלה. Also, in Hebrew it's one flowing sentence, it's not like saying in English "a shirt and pants, they are clothes", the word הם serves as the verb "to be" in this instance: a shirt and pants are clothes.
Do you not know about the Memrise Hebrew duolingo vocab?
The individual words are on Memrise, most are in the Duolingo Hebrew vocabulary course, the rest, including sentences using these words (at a much slower rate) are in the Modern Hebrew course. Both courses are awesome and user created. (I mention this because it means you have to click on the link to add it to your account, then you can use the app - but you won't find them by searching from the app, only searching from the website or the link).
I'm learning Modern Hebrew Complete (with audio) on Memrise! http://www.memrise.com/course/364795/
I'm learning Hebrew Duolingo on Memrise! http://www.memrise.com/course/1031737/
https://forvo.com/search/%d7%9e%d7%9b%d7%a0%d7%a1%d7%99%d7%99%d7%9d/ for the trousers
The s in "shirt" was capitalized in the word order exercise, which suggests that we can directly say "Shirt and pants are clothing" instead of "A shirt and pants.."
Is it really so that the indefinite article can be omitted, so that we can directly say : "Shirt and pants are.." . I don't feel it's right..?
Just be careful of pants in English being different to pants in American. Trousers...
"Mich'na'sa'yim" is that clear to you? Sometimes my English transliterations are not great. :)
(The 'i' = a long 'e')
I think clothes and clothing mean the same thing, no? What's the difference?
Yes. They are the same. American English at least use them in the same context - although I think it's situational and how you prefer. One is more formal. Like:
He has a clothing store. I buy my clothes from him. That's how I prefer it, but it could easily be switched. (Because pronouncing a word ending in "s" and the next one starting with "s" can sound like other things when you talk too fast: (clothes store / closed door)...
Clothes store, is awkward.
"Clothing" is more formal. Your choice.