gladly received. used to greet someone in polite or friendly way. Friendly greeting to someone who has arrived. To greet someone who has just arrived.

Explanation of how something works (e.g. product).

Talk or speech about a particular subject. To give a talk or speech about a subject.

Challenging to explain or understand. To be a challenge to understand; confuse.

not same as another or each other.

Not one or the other not either none of two things. used before first of two alternatives to indicate that they are each untrue. Not in either case. not one nor other of two people or things. Not either one.

causing surprise. To do something that another person didn't expect.

respond or behave in particular way in response to something.

used for emphasis with following adjective functioning as adverb. thing that is unspecified or unknown.

To take place or occur.

book or electronic resource that lists words of language and gives their meaning.

place where road branches off from another. To become a different quality, color, etc..

To grow something naturally.

container for laboratory use. Flat-bottomed jar made of glass or plastic.

An object that can be used to hold things.