Taking care of your regular guests and strangers is describing you as being hospitable.

The amount of medicine given to a patient is called its dosage. 

A careful and highly detailed approach to something is being very diligent.

Someone who is easily deceived or fooled is said to be duped.

When many items seem to meet at one specific point is to converge on that point.

A very common phrase that inventors refuse to believe, "it's impossible".

Factual evidence or documentation proving someone's ability to perform something is their credentials.

A very biased or self-proclaiming feeling about any group or attitude.

Another meaning for the word meeting is a committee, so let's form one.

The act of bringing something to an end.