An affiant is a person who swears to the truth of statements made in an affidavit. An affidavit is statement of facts which is sworn to (or affirmed) before an officer who has authority to administer an oath (e.g. a notary public). The person making the signed statement (affiant) takes an oath that the contents are, to the best of their knowledge, true. It is also signed by a notary or some other judicial officer that can administer oaths, affirming that the person signing the affidavit was under oath when doing so.
Embezzlement is the fraudulent appropriation of money by someone entrusted with its care on behalf of others, but who uses it for his/her own purposes. Embezzlement typically occurs in the employment and corporate settings. It is a crime that may involve small sums or very large sums of money. Embezzlers commonly steal relatively small amounts repeatedly over a long period of time, although some embezzlers steal one large sum at one time.