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.
PANTHEON came from the Greek Word 'pan' means all, 'theos' means god and/or 'theion' meaning holy. Is means a group of people who are respected, famous and important people; a group of god or religion collective.