extend

As verbs the difference between extend and level

is that extend is to increase in extent while level is to adjust so as to make as flat or perpendicular to the ground as possible.

As an adjective level is

the same height at all places; parallel to a flat ground.

As a noun level is

a tool for finding whether a surface is level, or for creating a horizontal or vertical line of reference.

As a verb extend

is to increase in extent.

As a noun null is

zero, nil; the cardinal number before einn.

As verbs the difference between delay and extend

is that delay is to put off until a later time; to defer while extend is to increase in extent.

As a noun delay

is a period of time before an event occurs; the act of delaying; procrastination; lingering inactivity.

As verbs the difference between tend and extend

is that tend is to kindle; ignite; set on fire; light; inflame; burn or tend can be (legal|old english law) to make a tender of; to offer or tender or tend can be (with to) to look after (eg an ill person) while extend is to increase in extent.

As verbs the difference between extend and tense

is that extend is to increase in extent while tense is to apply a tense to.

As a noun tense is

any of the forms of a verb which distinguish when an action or state of being occurs or exists.

As an adjective tense is

showing signs of stress or strain; not relaxed.

As an adjective wider

is (wide).

As a verb extend is

to increase in extent.

As verbs the difference between extend and include

is that extend is to increase in extent while include is to bring into a group, class, set, or total as a (new) part or member.

As a noun include is

a piece of source code or other content that is dynamically retrieved for inclusion in another item.

Circulate is a related term of extend.

In lang=en terms the difference between circulate and extend

is that circulate is to cause (a person or thing) to move in circles or through a circuit while extend is to straighten (a limb).

As verbs the difference between circulate and extend

is that circulate is to move in circles or through a circuit while extend is to increase in extent.

As an adjective huge

is very large.

As a verb extend is

to increase in extent.

In lang=en terms the difference between extend and append

is that extend is to straighten (a limb) while append is to add, as an accessory to the principal thing; to annex; as, notes appended to this chapter.

As verbs the difference between extend and append

is that extend is to increase in extent while append is to hang or attach to, as by a string, so that the thing is suspended; as, a seal appended to a record; the inscription was appended to the column.

As a noun append is

(computing) an instance of writing more data to the end of an existing file.