restrain — to hold back from action; keep in check or under control; repress: to restrain one's temper.
locate — to identify or discover the place or location of: to locate the bullet wound.
identify — to recognize or establish as being a particular person or thing; verify the identity of: to identify handwriting; to identify the bearer of a check.
specify — to mention or name specifically or definitely; state in detail: He did not specify the amount needed.
restrict — to confine or keep within limits, as of space, action, choice, intensity, or quantity.
confine — To confine something to a particular place or group means to prevent it from spreading beyond that place or group.
limit — the final, utmost, or furthest boundary or point as to extent, amount, continuance, procedure, etc.: the limit of his experience; the limit of vision.
focus — a central point, as of attraction, attention, or activity: The need to prevent a nuclear war became the focus of all diplomatic efforts.
contain — If something such as a box, bag, room, or place contains things, those things are inside it.
concentrate — If you concentrate on something, or concentrate your mind on it, you give all your attention to it.
centre — A centre is a building where people have meetings, take part in a particular activity, or get help of some kind.