Real Dictionary

tend
verb: If something tends to happen, it usually happens or it often happens.
verb: If you tend towards a particular characteristic, you often display that characteristic.
verb: You can say that you tend to think something when you want to give your opinion, but do not want it to seem too forceful or definite.

tend in American English 1
to take care of; minister to; watch over; look after; attend to
intransitive verb: to be disposed or inclined in action, operation, or effect to do something

tend in American English 2
to be directed; proceed or extend
intransitive verb: to attend by action, care, etc.
transitive verb: to attend to by work or services, care, etc.

tend in British English 1
verb: to have a general disposition (to do something); be inclined

tend in British English 2
verb: to care for