When we speak of bilateral we do not refer to the two parts, sides or aspects that are considered, that are related to a thing or that are affected by its consequences.
In this sense, it is possible to speak of bilateral relations or links that arise between two nations or entities. For example: "The chancellor promised to reestablish bilateral relations with the neighboring country "
In Law, it applies to contracts in which both parties are obliged to give, do or not do something, which compensates the benefit of the other party with greater or lesser equality; as in sale (thing and price), in exchange (thing for something different), in society (contribution against eventual profits), etc.
When states recognize themselves as sovereign states and commit to developing diplomatic relations, they exchange embassies to facilitate dialogue. It is an agreement that is affecting or made by two parties; a bilateral agreement.
A company that distributes mineral water and another dedicated to providing Internet services establish a bilateral contract whereby the former agrees to deliver 100 liters of mineral water per month and the latter to provide the connection service. In the event that one of the two does not comply with the provisions (that is, the first company does not deliver the water or the second does not provide the connection), the bilateral contract will have been violated.
In the field of Health and Medicine, we must also emphasize the use of the term that we are now analyzing. Specifically, this sector talks about what is known as bilateral mammography. This is neither more nor less than the x - ray of both breasts a woman to be able to determine the state in which the breast tissue lies.
On the other hand, at the request of biology, the word at hand also has a special use since it helps to compose a concept such as bilateral symmetry. Bilateral symmetry designates that single plane, the sagittal plane (perpendicular to the ground and at right angles to the frontal planes), by which the bodies of animals and humans are divided into two equal and identical parts, half corresponding to the side right and the other half to the left.
