When you enter a Russian apartment, often one of the first things you encounter is an item of furniture on which to hang your coat, and that item is called a вешалка. It's a mostly regular noun, but do notice the fill-vowel in the genitive plural:

The stem of the word is вес-, which means ‘hang.’ It can apply to a thousand items that are used to hang things: a free-standing coat rack, a peg-board that holds coats, a wire hanger, a hook on a wall, a loop on a shirt, or even a towel-rack:

Various types of вешалки

Sample sentences:

Поехать is the most generic perfective verb that means “to go by vehicle.” Note especially its irregular future and imperative forms.

Поехать is more specialized than ездить in that it always talks about motion in one particular direction; since it is perfective it also focuses on some result of the action:

In that sentence, the result is that I arrived at the square and thus could view the body.

Поехать can also be used to describe each leg of a multileg journey:

Of course you can do the same thing in the future tense:

Now here's something amusing... let's think about this English dialog:

Does the second sentence imply that Mom got to the farmers market? No, it doesn't. Here it emphasizes absence from the point of departure while mentioning her intended destination. Likewise in Russian a perfective verb of motion can be used with meaning of “absence from point of departure”:

The sentence does not say where Mom has necessarily reached the market, just that she is no longer here.

¹ All three of those places are suburbs of Moscow that you can reach on the электричка on the way to Tula.

Неделя is a word that comes from the stem дел- ‘do’ and the negative particle не ‘not.’ It used to mean the day of the week on which you do nothing, in other words Sunday. Bearing that meaning in mind, if you say something happens через неделю “(having passed) through Sunday,” that is in effect saying that it happens the following week. That, I think, is how the old word for Sunday became the modern word for week and now is never used in the meaning of Sunday. It's a regular second declension, soft stem noun:

When saying that something happened this/last/next week, the preposition на is used with неделя in the prepositional case:

To say something happened a week ago, you use the postposition назад with неделя in the accusative case:

To say something will happen in a week, use the preposition через with неделя in the accusative case:

Ехать is the determinate (unidirectional) form of the verb ездить “to go by vehicle.” Note especially the odd д that shows up in the present tense forms, as well as its curious command form.

Ехать is more specialized than ездить in that it always talks about motion in progress toward a particular place. Let's say you bump into a friend on the subway. Because you are in a vehicle, you can say:

Although normally adverbs of frequency and phrases of frequency (like часто and каждый день) usually trigger an indeterminate verb, if the situation describes something that happens regularly on the way to a place, then you use the determinate verb ехать:

One of the curious uses of determinate verbs is that they can be used to say how long it takes to get to a place. From the English-speaking point of view that is rather odd. After all, getting to the place implies a completed action, so we should use a perfective verb, right? But from the Russian point of view in these sentences they are indicating how long the process takes, so the imperfective works:

The word нуль sometimes occurs in fixed phrases like «начать с нуля» “to start from zero,” which catches the idea of beginning a process with zero previous knowledge or experience or resources:

Just as in English you can refer to someone as being a complete zero (i.e., being a worthless human being), so also the Russian word can be used in that sense:

The word is also used to describe a certain haircut «под нуль», that is, “down to zero” or bald. It's the haircut that every draftee receives when joining the Russian army.

Как только пойдёшь в солдаты, тебя остригут под нуль.
As soon as you become a soldier, they shave you bald.

The haircut has become so popular among tough young men that sometimes they are called нули, which is probably best translated as ‘thugs.’ (You can hear the word used that way in the elusively connected song «Главное» “The important thing” by the singer Земфира.)