difference between family bond and family tie

[kwfine]

Hi teachers,
Parents raise their children and love their children.
Their children will take care of their old parents when their parents are old.

Which of these sentences is correct to describe the abovecase?
(1) They have strong family tie.
(2) They have strong famil bond.
If none of these sentences is correctly describing the above case, please suggest some good words for me.

Thank you.
Kitty

[Alan]

--> They have A strong family bond.

or

They have strong family TIES.