mom-and-pop

★relating to a small business owned and operated by members of the same family

Our family has been operating this mom-and-pop shop for 20 years.

small and midsized businesses

mom-and-pop shops

entrepreneurs 

entrepreneur /,ɑːntrəprə’nɜːr/　[語源:ﾌﾗﾝｽ]　企業家、請負人(contractor) 

★ a person who makes money by starting or running businesses, especially when this involves taking financial risks

・ A creative entrepreneur, he was continually dreaming up new projects.

・ a recent MBA graduate and budding entrepreneur   

involve

financial　　adj)金銭上の

continually　　

bud /bʌd/　n)つぼみ、芽　v)芽を出す