Read the definition, enter the appropriate word

the main support or foundation of a system or structure

to make a process or task easier or possible

a connection or relationship between two or more things

to push or drive something forward

to keep or continue to possess something

to improve or renovate something, often by making significant changes

strong, sturdy, and resilient, able to withstand or cope with challenging conditions or situations

to support or strengthen the foundation or basis of something

the act of making minor changes or modifications to something

expressing agreement or approval