FIDDLING is an adjective that means petty or annoyingly trivial
WOOF came from the 19th century word meaning imitative. Woof is a barking sound of a dog.
ESTATES has different meaning and one of it is an owned area of land in a country usually with a house. It may also mean as a class or order in a political body. Lastly, it may also mean as a state, period or condition in life.
Estranged means a person who is no longer closed to you or alienated while Strange means a uncommon, hard to understand and a surprising way. It has no similarities at all.
PIGGY BANK means a container for a persons saving. In old times, people use what is available to them and one of it a container made of clay which what they called pyyg / pyygy bank.
The term stick to your knitting means sticking or clinging to what is familiar to you, related to you instead of going in to diversity, continue to be with what you have started.